TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ANHYDROUS ACID [9 records]
Record 1 - internal organization data 2011-12-12
Record 1, English
Record 1, Subject field(s)
- Food Additives
- Breadmaking
Record 1, Main entry term, English
- baking powder
1, record 1, English, baking%20powder
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A [chemical] leavening agent that raises dough by the gas(carbon dioxide) produced when baking soda and acid react in the presence of water : it usually contains baking soda mixed with either starch or flour and cream of tartar or other acid-forming substance, as anhydrous sodium aluminum sulfate. 2, record 1, English, - baking%20powder
Record 1, Key term(s)
- baking-powder
Record 1, French
Record 1, Domaine(s)
- Additifs alimentaires
- Boulangerie
Record 1, Main entry term, French
- poudre à pâte
1, record 1, French, poudre%20%C3%A0%20p%C3%A2te
correct, feminine noun, Quebec
Record 1, Abbreviations, French
Record 1, Synonyms, French
- levure chimique 2, record 1, French, levure%20chimique
correct, feminine noun, Europe
- poudre à lever 3, record 1, French, poudre%20%C3%A0%20lever
correct, feminine noun, Europe
- poudre alsacienne 4, record 1, French, poudre%20alsacienne
correct, feminine noun, Europe
- poudre levante 5, record 1, French, poudre%20levante
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[...] mélange de substances chimiques (bicarbonate de soude ou carbonate d'ammoniaque associé avec de la crème de tartre, de l'acide tartrique ou du phosphate d'aluminium sodique, et avec un excipient : farine, amidon ou carbonate de chaux alimentaire). 5, record 1, French, - poudre%20%C3%A0%20p%C3%A2te
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Aditivos alimentarios
- Panificación
Record 1, Main entry term, Spanish
- levadura en polvo
1, record 1, Spanish, levadura%20en%20polvo
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- polvo para hornear 2, record 1, Spanish, polvo%20para%20hornear
correct, masculine noun
- levadura química 3, record 1, Spanish, levadura%20qu%C3%ADmica
correct, feminine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Producto químico que permite dar esponjosidad a una masa debido a la capacidad de liberar dióxido de carbono [...], es una mezcla de un ácido no tóxico (como el cítrico o el tartárico) y una sal de un ácido o base débil, generalmente carbonato o bicarbonato [...] 1, record 1, Spanish, - levadura%20en%20polvo
Record 2 - internal organization data 2011-08-23
Record 2, English
Record 2, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 2
Record 2, Main entry term, English
- lead(IV) oxide
1, record 2, English, lead%28IV%29%20oxide
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- brown lead oxide 2, record 2, English, brown%20lead%20oxide
correct
- lead dioxide 3, record 2, English, lead%20dioxide
former designation, correct
- anhydrous plumbic acid 2, record 2, English, anhydrous%20plumbic%20acid
former designation, avoid
- lead brown 4, record 2, English, lead%20brown
former designation, avoid
- lead oxide brown 5, record 2, English, lead%20oxide%20brown
former designation, avoid
- lead peroxide 3, record 2, English, lead%20peroxide
former designation, avoid
- lead superoxide 6, record 2, English, lead%20superoxide
former designation, avoid
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A chemical compound ... which appears under the form of poisonous, brown hexagonal crystals that decompose when heated, is insoluble in water and alcohol, soluble in glacial acetic acid, is derived by adding bleaching powder to an alkaline solution of lead hydroxide, and is used as an oxidizing agent, in electrodes, lead-acid storage batteries, matches and explosives, as a textile mordant, in dye manufacture, and as an analytical reagent. 7, record 2, English, - lead%28IV%29%20oxide
Record number: 2, Textual support number: 1 OBS
Chemical formula: PbO2 or O2Pb 8, record 2, English, - lead%28IV%29%20oxide
Record 2, French
Record 2, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 2
Record 2, Main entry term, French
- oxyde de plomb(IV)
1, record 2, French, oxyde%20de%20plomb%28IV%29
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- oxyde puce de plomb 2, record 2, French, oxyde%20puce%20de%20plomb
correct, masculine noun
- dioxyde de plomb 3, record 2, French, dioxyde%20de%20plomb
former designation, correct, masculine noun
- bioxyde de plomb 4, record 2, French, bioxyde%20de%20plomb
former designation, avoid, masculine noun
- peroxyde de plomb 5, record 2, French, peroxyde%20de%20plomb
former designation, avoid, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Formule chimique : PbO2 ou O2Pb 6, record 2, French, - oxyde%20de%20plomb%28IV%29
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 2
Record 2, Main entry term, Spanish
- dióxido de plomo
1, record 2, Spanish, di%C3%B3xido%20de%20plomo
masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 OBS
Sólido cristalino de color pardo. Soluble en ácido acético glacial, insoluble en agua y alcohol. Oxidante. Tóxico. 1, record 2, Spanish, - di%C3%B3xido%20de%20plomo
Record number: 2, Textual support number: 2 OBS
Fórmula química: PbO2 o O2Pb 2, record 2, Spanish, - di%C3%B3xido%20de%20plomo
Record 3 - internal organization data 2011-06-22
Record 3, English
Record 3, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 3
Record 3, Main entry term, English
- dimethylamine
1, record 3, English, dimethylamine
correct
Record 3, Abbreviations, English
- DMA 2, record 3, English, DMA
see observation
Record 3, Synonyms, English
- dimethyl amine 3, record 3, English, dimethyl%20amine
- N-methylmethanamine 4, record 3, English, N%2Dmethylmethanamine
correct, see observation
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
A chemical product which appears under the form of an anhydrous gas with an ammoniacal odor, is derived by the interaction of methanol and ammonia over a catalyst at high temperatures, and is used as an acid gas absorbent, a dehairing agent, a flotation agent, an antioxidant, a solvent, in the manufacture of dimethylformamide and dimethylacetamide, in dyes, gasoline stabilizers, pharmaceuticals, textile chemicals, rubber accelerators, electroplating, missile fuels, pesticide and rocket propellants, surfactants, and as a reagent for magnesium. 3, record 3, English, - dimethylamine
Record number: 3, Textual support number: 1 OBS
dimethylamine: used by the American Conference of Governmental Industrial Hygienists (ACGIH) and by the US Occupational Safety and Health Administration (OSHA). 3, record 3, English, - dimethylamine
Record number: 3, Textual support number: 2 OBS
N-methylmethanamine: The capital letter "N" must be italicized. 5, record 3, English, - dimethylamine
Record number: 3, Textual support number: 3 OBS
DMA: This might be an in-house or a non-recognized abbreviation; not to be used alone, to avoid any risk of confusion. 5, record 3, English, - dimethylamine
Record number: 3, Textual support number: 4 OBS
Chemical formula: (CH3)2NH or C2H7N 3, record 3, English, - dimethylamine
Record 3, French
Record 3, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 3
Record 3, Main entry term, French
- diméthylamine
1, record 3, French, dim%C3%A9thylamine
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- diméthyl amine 2, record 3, French, dim%C3%A9thyl%20amine
feminine noun
- N-méthylméthanamine 3, record 3, French, N%2Dm%C3%A9thylm%C3%A9thanamine
correct, see observation, feminine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Composé se présentant sous la forme d'un gaz incolore, d'odeur ammoniacale, très soluble dans l'eau, l'alcool, l'éther et les hydrocarbures, que l'on utilise dans les accélérateurs de vulcanisation, les colorants, les émulsifiants, les produits pharmaceutiques et les solvants. 4, record 3, French, - dim%C3%A9thylamine
Record number: 3, Textual support number: 1 OBS
N-méthylméthanamine: La lettre majuscule «N» s'écrit en italique. 3, record 3, French, - dim%C3%A9thylamine
Record number: 3, Textual support number: 2 OBS
Formule chimique : (CH3)2NH ou C2H7 4, record 3, French, - dim%C3%A9thylamine
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 3
Record 3, Main entry term, Spanish
- dimetilamina
1, record 3, Spanish, dimetilamina
correct, feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Gas con olor amoniacal, soluble en alcohol, éter y agua. Inflamable. Tóxico e irritante. 2, record 3, Spanish, - dimetilamina
Record number: 3, Textual support number: 1 OBS
Fórmula química: (CH3)2NH o C2H7 3, record 3, Spanish, - dimetilamina
Record 4 - internal organization data 2011-02-08
Record 4, English
Record 4, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 4
Record 4, Main entry term, English
- anhydrous diammonium nickel(II) disulfate
1, record 4, English, anhydrous%20diammonium%20nickel%28II%29%20disulfate
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- anhydrous ammonium disulfatonickelate(II) 1, record 4, English, anhydrous%20ammonium%20disulfatonickelate%28II%29
correct
- anhydrous ammonium nickel(II) sulfate 1, record 4, English, anhydrous%20ammonium%20nickel%28II%29%20sulfate
correct
- anhydrous ammonium nickel sulfate 1, record 4, English, anhydrous%20ammonium%20nickel%20sulfate
correct
- anhydrous nickel ammonium sulfate 1, record 4, English, anhydrous%20nickel%20ammonium%20sulfate
- anhydrous nickel(II) ammonium sulfate 1, record 4, English, anhydrous%20nickel%28II%29%20ammonium%20sulfate
- anhydrous nickelous ammonium sulfate 1, record 4, English, anhydrous%20nickelous%20ammonium%20sulfate
obsolete
- anhydrous sulfuric acid ammonium nickel salt 1, record 4, English, anhydrous%20sulfuric%20acid%20ammonium%20nickel%20salt
- anhydrous sulfuric acid ammonium nickel(2+) salt(2 : 2 : 1) 1, record 4, English, anhydrous%20sulfuric%20acid%20ammonium%20nickel%282%2B%29%20salt%282%20%3A%202%20%3A%201%29
correct
- anhydrous nickel (II) ammonium sulfate 1, record 4, English, anhydrous%20nickel%20%28II%29%20ammonium%20sulfate
avoid
Record 4, Textual support, English
Record number: 4, Textual support number: 1 OBS
See also ammonium nickel sulfate hexahydrate (CAS number: 7785-20-8) and ammonium nickel sulfate (CAS number: 15699-18-0). 2, record 4, English, - anhydrous%20diammonium%20nickel%28II%29%20disulfate
Record number: 4, Textual support number: 2 OBS
Chemical formula: (NH4)2Ni(SO4)2 2, record 4, English, - anhydrous%20diammonium%20nickel%28II%29%20disulfate
Record 4, French
Record 4, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 4
Record 4, Main entry term, French
- disulfate de diammonium et de nickel(II) anhydre
1, record 4, French, disulfate%20de%20diammonium%20et%20de%20nickel%28II%29%20anhydre
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- disulfatonickelate(II) d'ammonium anhydre 1, record 4, French, disulfatonickelate%28II%29%20d%27ammonium%20anhydre
correct, masculine noun
- sulfate d'ammonium et de nickel(II) anhydre 1, record 4, French, sulfate%20d%27ammonium%20et%20de%20nickel%28II%29%20anhydre
correct, masculine noun
- sulfate d'ammonium et de nickel anhydre 1, record 4, French, sulfate%20d%27ammonium%20et%20de%20nickel%20anhydre
correct, masculine noun
- sulfate de nickel et d'ammonium anhydre 1, record 4, French, sulfate%20de%20nickel%20et%20d%27ammonium%20anhydre
masculine noun
- sulfate de nickel(II) et d'ammonium anhydre 1, record 4, French, sulfate%20de%20nickel%28II%29%20et%20d%27ammonium%20anhydre
masculine noun
- sulfate d'ammonium nickeleux anhydre 1, record 4, French, sulfate%20d%27ammonium%20nickeleux%20anhydre
masculine noun, obsolete
- sel d'ammonium et de nickel de l'acide sulfurique anhydre 1, record 4, French, sel%20d%27ammonium%20et%20de%20nickel%20de%20l%27acide%20sulfurique%20anhydre
masculine noun
- sel d'ammonium et de nickel(2+) de l'acide sulfurique (2:2:1) anhydre 1, record 4, French, sel%20d%27ammonium%20et%20de%20nickel%282%2B%29%20de%20l%27acide%20sulfurique%20%282%3A2%3A1%29%20anhydre
correct, masculine noun
- sulfate de nickel ammoniacal anhydre 1, record 4, French, sulfate%20de%20nickel%20ammoniacal%20anhydre
avoid, masculine noun
- sulfate de nickel (II) ammoniacal anhydre 1, record 4, French, sulfate%20de%20nickel%20%28II%29%20ammoniacal%20anhydre
avoid, masculine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
Voir aussi sulfate d'ammonium et de nickel hexahydrate (numéro CAS : 7785-20-8) et sulfate d'ammonium et de nickel (numéro CAS : 15699-18-0). 2, record 4, French, - disulfate%20de%20diammonium%20et%20de%20nickel%28II%29%20anhydre
Record number: 4, Textual support number: 2 OBS
Formule chimique : (NH4)2Ni(SO4)2 2, record 4, French, - disulfate%20de%20diammonium%20et%20de%20nickel%28II%29%20anhydre
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2011-01-31
Record 5, English
Record 5, Subject field(s)
- Chemical Elements and Compounds
- Air Pollution
Universal entry(ies) Record 5
Record 5, Main entry term, English
- pernitric acid
1, record 5, English, pernitric%20acid
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- peroxynitric acid 1, record 5, English, peroxynitric%20acid
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
An explosive acid HNO4 held to be obtained as a liquid or in the form of salts(as by oxidation of nitrogen pentoxide with anhydrous hydrogen peroxide)-called also peroxynitric acid; not used systematically 1, record 5, English, - pernitric%20acid
Record number: 5, Textual support number: 1 OBS
Chemical formula: HNO4 or NHO4 or HO2NO2 2, record 5, English, - pernitric%20acid
Record 5, French
Record 5, Domaine(s)
- Éléments et composés chimiques
- Pollution de l'air
Entrée(s) universelle(s) Record 5
Record 5, Main entry term, French
- acide pernitrique
1, record 5, French, acide%20pernitrique
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- acide perazotique 2, record 5, French, acide%20perazotique
correct, masculine noun, obsolete
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Substance qui agit comme réservoir d'azote dans la stratosphère. 2, record 5, French, - acide%20pernitrique
Record number: 5, Textual support number: 1 OBS
Formule chimique : HNO4 ou NHO4 ou HO2NO2 3, record 5, French, - acide%20pernitrique
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Elementos y compuestos químicos
- Contaminación del aire
Entrada(s) universal(es) Record 5
Record 5, Main entry term, Spanish
- ácido pernítrico
1, record 5, Spanish, %C3%A1cido%20pern%C3%ADtrico
correct, masculine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 OBS
Fórmula química: HNO4 o NHO4 o HO2NO2 2, record 5, Spanish, - %C3%A1cido%20pern%C3%ADtrico
Record 6 - internal organization data 2011-01-12
Record 6, English
Record 6, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 6
Record 6, Main entry term, English
- hydrogen chloride
1, record 6, English, hydrogen%20chloride
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- anhydrous hydrochloric acid 2, record 6, English, anhydrous%20hydrochloric%20acid
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A colorless pungent nonflammable poisonous gas HCl that fumes strongly in moist air and that is obtained primarily as a by-product of the chlorination of organic compounds or by burning hydrogen in chlorine. 3, record 6, English, - hydrogen%20chloride
Record number: 6, Textual support number: 1 OBS
Use: Production of vinyl chloride form acetylene, and alkyl chlorides from olefins; hydrochlorination; polymerization; isomerization, alkylation; and nitration reactions. 4, record 6, English, - hydrogen%20chloride
Record number: 6, Textual support number: 2 OBS
It yields hydrochloric acid when dissolved in water. See also that other record. 5, record 6, English, - hydrogen%20chloride
Record 6, French
Record 6, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 6
Record 6, Main entry term, French
- chlorure d'hydrogène
1, record 6, French, chlorure%20d%27hydrog%C3%A8ne
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- gaz chlorhydrique 2, record 6, French, gaz%20chlorhydrique
correct, masculine noun
- acide chlorhydrique anhydre 3, record 6, French, acide%20chlorhydrique%20anhydre
correct, masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
[...] gaz incolore, d'odeur piquante et de saveur acide [...], assez facile à liquéfier, [qui] bout sous la pression atmosphérique à [...] - 85 °C, [...] très soluble dans l'eau [...] 4, record 6, French, - chlorure%20d%27hydrog%C3%A8ne
Record number: 6, Textual support number: 1 OBS
La solution de chlorure d'hydrogène HCl dans l'eau constitue l'acide chlorhydrique [voir aussi cette fiche]. 4, record 6, French, - chlorure%20d%27hydrog%C3%A8ne
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 6
Record 6, Main entry term, Spanish
- cloruro de hidrógeno
1, record 6, Spanish, cloruro%20de%20hidr%C3%B3geno
correct, masculine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Gas fumante, con olor sofocante, incoloro, soluble en agua, alcohol y éter. No inflamable. Tóxico e irritante. 2, record 6, Spanish, - cloruro%20de%20hidr%C3%B3geno
Record 7 - internal organization data 2010-12-23
Record 7, English
Record 7, Subject field(s)
- Chemistry
Universal entry(ies) Record 7
Record 7, Main entry term, English
- phosphorus pentoxide
1, record 7, English, phosphorus%20pentoxide
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- phosphorous pentoxide 2, record 7, English, phosphorous%20pentoxide
correct
- phosphoric anhydride 3, record 7, English, phosphoric%20anhydride
correct
- phosphoric oxide 4, record 7, English, phosphoric%20oxide
correct
- phosphorous oxide 5, record 7, English, phosphorous%20oxide
correct
- di-phosphorus pentoxide 5, record 7, English, di%2Dphosphorus%20pentoxide
correct
- diphosphorus pentoxide 6, record 7, English, diphosphorus%20pentoxide
correct
- anhydrous phosphoric acid 7, record 7, English, anhydrous%20phosphoric%20acid
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
A compound known in various polymeric forms ... that is obtained usually by burning phosphorus in an excess of dry air and occurs as a white powder that reacts vigorously and sometimes explosively with water to form phosphoric acids ... and is used chiefly as a drying agent, as a condensing agent in organic synthesis, and in making phosphoric acids and derivatives ... 5, record 7, English, - phosphorus%20pentoxide
Record number: 7, Textual support number: 1 OBS
Chemical formula: P205 8, record 7, English, - phosphorus%20pentoxide
Record 7, French
Record 7, Domaine(s)
- Chimie
Entrée(s) universelle(s) Record 7
Record 7, Main entry term, French
- anhydride phosphorique
1, record 7, French, anhydride%20phosphorique
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- pentoxyde de phosphore 2, record 7, French, pentoxyde%20de%20phosphore
correct, masculine noun
- hémipentaoxyde de phosphore 3, record 7, French, h%C3%A9mipentaoxyde%20de%20phosphore
correct, masculine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
Les principales [combinaisons de phosphore avec l'oxygène] sont l'anhydride phosphoreux et l'hémipentaoxyde de phosphore ou anhydride phosphorique. On les obtient par combustion du phosphore en présence d'air; pour l'anhydride phosphorique, on utilise un excès d'air. [Il] est solide, blanc, très avide d'eau, ce qui le fait employer comme desséchant énergique. 3, record 7, French, - anhydride%20phosphorique
Record number: 7, Textual support number: 1 OBS
Formule chimique : P205 4, record 7, French, - anhydride%20phosphorique
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Química
Entrada(s) universal(es) Record 7
Record 7, Main entry term, Spanish
- anhídrido fosfórico
1, record 7, Spanish, anh%C3%ADdrido%20fosf%C3%B3rico
correct, masculine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
Record 7, Textual support, Spanish
Record number: 7, Textual support number: 1 DEF
Polvo blanco. Absorbe la humedad atmosférica, formando ácido metapiro-u orto-fosfórico. Fuerte irritante. Inflamable. 1, record 7, Spanish, - anh%C3%ADdrido%20fosf%C3%B3rico
Record number: 7, Textual support number: 1 OBS
Fórmula química: P205 2, record 7, Spanish, - anh%C3%ADdrido%20fosf%C3%B3rico
Record 8 - internal organization data 2000-10-24
Record 8, English
Record 8, Subject field(s)
- Chemical Elements and Compounds
Record 8, Main entry term, English
- anhydrous acid 1, record 8, English, anhydrous%20acid
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, French
Record 8, Domaine(s)
- Éléments et composés chimiques
Record 8, Main entry term, French
- acide anhydre
1, record 8, French, acide%20anhydre
masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record 8, Spanish
Record 8, Campo(s) temático(s)
- Elementos y compuestos químicos
Record 8, Main entry term, Spanish
- ácido anhidro
1, record 8, Spanish, %C3%A1cido%20anhidro
correct, masculine noun
Record 8, Abbreviations, Spanish
Record 8, Synonyms, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1992-06-30
Record 9, English
Record 9, Subject field(s)
- Pulp and Paper
Record 9, Main entry term, English
- Hereng process
1, record 9, English, Hereng%20process
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- process of Hereng 1, record 9, English, process%20of%20Hereng
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Hydrolysis with Hydrogen Chloride Gas.... A variation of the use of concentrated hydrochloric acid combined with hydrogen chloride is the process of Hereng. Here, wood chips are impregnated with 30% hydrochloric acid in a mixer and then transferred by a conveyor into the reactor. Because the chips are not predried, the acid concentration in them is reduced to 20%. The reactor consists of a hexagonal upright vessel equipped with numerous inclined trays. The impregnated wood is moved from the top toward the bottom by means of a vibrator and thus the prehydrolysis is completed after 45 minutes. The acid, containing chiefly pentoses, is filtered off and part of it is returned to the mixer. In this way, the sugar concentration in the prehydrolyzate is increased to about 20% to 25%. In a second step, the material, which has again been mixed with 30% hydrochloric acid, is passed through the reactor and hydrogen chloride gas is injected at the bottom in a countercurrent. In this way, the acid concentration is increased to 40% to 41% or more. The hydrolyzed material is conveyed from the bottom of the reactor to a drying chamber and is dried there with anhydrous hydrogen chloride gas which has previously been passed through a calcium chloride solution. The hydrolyzed material, consisting of lignin and sugar, is extracted with water and the sugar solution is subjected to a posthydrolysis. 1, record 9, English, - Hereng%20process
Record 9, French
Record 9, Domaine(s)
- Pâtes et papier
Record 9, Main entry term, French
- procédé Hereng
1, record 9, French, proc%C3%A9d%C3%A9%20Hereng
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
Plusieurs pays continuent à faire des recherches pour améliorer l'hydrolyse chimique. Le procédé Hereng utilisant l'acide chlorhydrique gazeux permet d'atteindre un meilleur rendement en sucre et de récupérer l'acide. 1, record 9, French, - proc%C3%A9d%C3%A9%20Hereng
Record 9, Spanish
Record 9, Textual support, Spanish
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