Agent Name

Tetraphosphorous triselenide

CAS Number

1314-86-9

Formula

P4-Se3

Major Category

Other Classes

Synonyms

Phosphorus triselenide; Tetraphosphorus triselenide; 3,5,7-Triselena-1,2,4,6-tetraphosphatricyclo[2.2.1.0]heptane; [Merck Index]

Category

Other Inorganic Compounds

Description

Orange-red solid with an irritating odor; [Merck Index]

Comments

Decomposed by moist air; [Merck Index] See "Selenium."

Exposure Assessment
TLV (ACGIH)

0.2 mg/m3, as Se

PEL (OSHA)

0.2 mg/m3, as Se

MAK

0.02 mg/m3, as Se, inhalable fraction

IDLH (NIOSH)

1 mg/m3, as Se

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