Agent Name

Phosphorus pentasulfide

CAS Number

1314-80-3

Formula

P2-S5

Major Category

Other Classes

Synonyms

Diphosphorus pentasulfide; Pentasulfure de phosphore [French]; Phosphoric sulfide; Phosphorus pentasulfide (P4S10); Phosphorus persulfide; Phosphorus sulfide (P2S5); Sirnik fosforecny [Czech]; Sulfur phosphide; Tetraphosphorus decasulfide; Thiophosphoric anhydride; Diphosphorus pentasulphide; [ChemIDplus] Phosphorus(V) sulfide; [Honeywell MSDS] UN1340

Category

Phosphorus Compounds

Description

Greenish-gray to yellow, crystalline solid with an odor of rotten eggs; [NIOSH] Deliquescent; [HSDB] Yellow solid with an unpleasant odor; [Honeywell MSDS]

Sources/Uses

Used to make lubricant additives, insecticides, matches, and other organic chemicals; [ACGIH]

Comments

Hepatic and renal failure are prominent in deaths due to acute phosphorus poisoning. Eye and respiratory irritation occur due to the hydrolysis products hydrogen sulfide and phosphoric acid. The TLV and STEL recommended correspond to those of phosphoric acid. [ACGIH] If left on clothing, can cause reddening of skin; [CHRIS] Corrosive to eyes; A severe skin and respiratory tract irritant; [ICSC] A lachrymator; [CHEMINFO] Reacts violently with water evolving toxic and flammable gases that may spontaneously ignite; A skin and strong eye irritant; Harmful by ingestion; [Honeywell MSDS]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TIH

Yes

Dangerous When Wet

Yes - A material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour; [ERG 2004]

TLV (ACGIH)

1 mg/m3

STEL (ACGIH)

3 mg/m3

PEL (OSHA)

1 mg/m3

IDLH (NIOSH)

250 mg/m3

Excerpts from Documentation for IDLHs

Phosphorus pentasulfide (P2S5) rapidly hydrolyzes to hydrogen sulfide (H2S) and phosphoric acid on contact with water or with moisture present in the air [ACGIH 1991].

Odor Threshold Low

0.0047 mg/m3

Explanatory Notes

An odor threshold of 0.0047 ppm for phosphorus pentasulfide has been reported. [ACGIH] Vapor pressure = 1 mm Hg at 300 deg C; [Sigma-Aldrich MSDS] Not TIH in land-based spills, but TiH substance released when spilled in water; [ERG 2016]

Adverse Effects
Lacrimator

Yes

Toxic Pneumonitis

Yes

Hepatotoxin

Hepatotoxin, Secondary

Nephrotoxin

Yes

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: