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YELLOW PHOSPHORUS [2 records]

Record 1 2023-11-29

English

Subject field(s)
  • Chemistry
CONT

White(sometimes called yellow) phosphorus is a white to yellow waxy solid with a garlic like odour. It ignites spontaneously in air at temperatures above 30 °C and continues to burn until it is fully oxidized or until deprived of oxygen. Burning phosphorus produces dense, white, irritating smoke containing mixed phosphorus oxides.

CONT

Yellow phosphorus. This is an extremely dangerous compound in that it can catch fire spontaneously and direct contact on the skin will produce burns that heal very slowly... It produces severe gastrointestinal irritation which can produce shock from circulatory failure.

Key term(s)
  • white phosphorous
  • yellow phosphorous

French

Domaine(s)
  • Chimie
CONT

Le phosphore blanc est un solide incolore ou blanc quand il est pur. Il se présente plus généralement sous l'aspect d'un solide jaune ambré de consistance cireuse, spontanément inflammable à l'air, d'odeur légèrement alliacée.

CONT

Le phosphore existe sous trois formes distinctes : le phosphore ordinaire (blanc), le phosphore rouge, et le phosphore noir.

Spanish

Save record 1

Record 2 2016-01-19

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Pb5(VO4)3Cl
formula, see observation
DEF

A red, yellow, or brown mineral of the apatite group [which] is isomorphous with pyromorphite, and commonly contains arsenic or phosphorus.

OBS

Vanadinite often forms globular masses encrusting other minerals in lead mines, and is an ore of vanadium and lead.

OBS

Chemical formula: Pb5(VO4)3Cl

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Pb5(VO4)3Cl
formula, see observation
DEF

Minéral (oxyde) du système cristallin hexagonal, du groupe de l'apatite, formant une série avec la pyromorphite, se présentant en prismes hexagonaux bruns plus ou moins foncés ou en magnifiques agrégats de cristaux rouges au Maroc.

CONT

La vanadinite se distingue immédiatement par sa magnifique teinte rouge-rubis foncé et la présence de [vanadium] dans la liqueur d'attaque (acide fort). C'est un minéral dont les gisements sont rares.

OBS

Formule chimique : Pb5(VO4)3Cl

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
Pb5(VO4)3Cl
formula, see observation
DEF

Mineral de la clase de los fosfatos-arseniatos-vanadatos, [...] con impurezas de arsénico y fósforo, que cristaliza en el sistema hexagonal, en prismas hexagonales o en agregados fibroso-radiados.

OBS

Tiene una dureza de 2.7 a 3 y un peso específico de 6.86 a 6.95. Presenta color rojo anaranjado o parduzco, raya roja y brillo adamantino, y es de translúcido a opaco. Es propio de las zonas de alteración en los yacimientos hidrotermales de plomo y es un mineral importante en las menas de vanadio.

OBS

Fórmula química: Pb5(VO4)3Cl

Save record 2

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