Main information on the phosphine or " phosphorus trihydride (PH3) as its physical characteristics, its effects on health, the means to detect it (PH3 gas detector) as well as adapted respiratory protection equipment (gas mask or power ventilation device with Anti-gas filter Type B).
The " phosphorus trihydride »(PH3) Better known as the appellation phosphine is mainly used in the activities of fumigation Thanks to its biocidal, mandatory properties for international transport. Industrially, the phosphine can be cleared in the Acetylene manufacturein the activities of dérouillage Metals with phosphoric acid or metal processing plants containing phosphs as impurity.
Phosphine is a gas colorless, identifiable to its fish smell. It's a gas extremely toxic By inhalation (R26) and can cause chemical burns (R34). She is also Very harmful to the environment, especially aquatic organisms (R50). In contact with oxidants, halogenated hydrocarbons or copper aluminum, it is explosive (R12) with spontaneous inflammation risks in the air (R17).
Despite his smell of fish, only one PH3 gas detector can accurately measure the concentrations of this gas. Although explosive at 1.6% volume, an explosive measurement is useless with this extremely toxic gas, we will move towards a Phosphin detectione in ppm, even in ppb.
For effective respiratory protection against phosphine, we will move towards a full mask for short time interventions or towards An assisted ventilation device (more comfortable) with Anti-gas filters Type B. If the concentrations exceed 60 times the VLEP, an insulating respirator will be imperative.
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