Phosphorus Sulfochloride
Title: Phosphorus Sulfochloride
CAS Registry Number: 3982-91-0
CAS Name: Thiophosphoryl chloride
Molecular Formula: Cl3PS
Molecular Weight: 169.40
Percent Composition: Cl 62.79%, P 18.28%, S 18.93%
Line Formula: PSCl3
Literature References: Prepd from P2S5 + PCl5: Martin, Duvall, Inorg. Synth. 4, 73 (1953). Alternate procedure from PCl3, AlCl3 and S: Moeller et al., ibid. 71.
Properties: Fuming liq, crystallizes as a-form at -40.8° or as b-form at -36.2°. bp760 125°. nD25 1.635. Sol in benzene, carbon tetrachloride, carbon disulfide, chloroform. Hydrolyzes slowly in water, rapidly in alkaline solns. In water the hydrolysis products are orthophosphoric acid, hydrochloric acid, and hydrogen sulfide.
Boiling point: bp760 125°
Index of refraction: nD25 1.635
CAUTION: Strong irritant.

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