Sulfur monochloride

Synonyms & Trade Names

Sulfur chloride, Sulfur subchloride, Thiosulfurous dichloride

CAS No.

10025-67-9

RTECS No.

WS4300000

DOT ID & Guide

1828 137

Formula

S₂Cl₂

Conversion

1 ppm = 5.52 mg/m³

IDLH

5 ppm
See: 10025679

Exposure Limits

NIOSH REL

C 1 ppm (6 mg/m³)

OSHA PEL

TWA 1 ppm (6 mg/m³) See Appendix G

Measurement Methods

None available
See: NMAM or OSHA Methods

Physical Description

Light-amber to yellow-red, oily liquid with a pungent, nauseating, irritating odor.

Molecular Weight

135.0

Boiling Point

280°F

Freezing Point

-107°F

Solubility

Decomposes

Vapor Pressure

7 mmHg

Ionization Potential

9.40 eV

Specific Gravity

1.68

Flash Point

245°F

Upper Explosive Limit

Lower Explosive Limit

Class IIIB Combustible Liquid: Fl.P. at or above 200°F.

Incompatibilities & Reactivities

Peroxides, oxides of phosphorous, organics, water [Note: Decomposes violently in water to form hydrochloric acid, sulfur dioxide, sulfur, sulfite, thiosulfate, and hydrogen sulfide. Corrosive to metals.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, mucous membrane; lacrimation (discharge of tears); cough; eye, skin burns; pulmonary edema

Target Organs

Eyes, skin, respiratory system

Personal Protection/Sanitation

(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
Provide:Eyewash, Quick drench

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 5 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern^£
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

Sulfur monochloride

NIOSH REL

OSHA PEL

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