ChemicalBook Product Catalog Inorganic chemistry Inorganic salts Metal halide and Halogen salt Non-metal halides, sulfides or sulfonated Sulfur dichloride

Sulfur dichloride

Product NameSulfur dichloride
CAS10545-99-0
MFCl2S
MW102.97
EINECS234-129-0
MOL File10545-99-0.mol

Chemical Properties

Melting point	-122°C
Boiling point	59.6°C (estimate)
Density	1.355 g/mL at 25 °C
vapor density	3.55 (vs air)
vapor pressure	25.67 psi ( 55 °C)
solubility	reacts with H2O
form	red viscous liquid
color	red viscous liquid
CAS DataBase Reference	10545-99-0(CAS DataBase Reference)
NIST Chemistry Reference	Sulfur dichloride(10545-99-0)
EPA Substance Registry System	Sulfur chloride (SCl2) (10545-99-0)

Safety Information

Hazard Codes	T,N,C
Risk Statements	23/24/25-34-40-50-37-14-35
Safety Statements	26-27-28-36/37/39-45-61
RIDADR	UN 3390 6.1/PG 1
TSCA	TSCA listed
HazardClass	8
PackingGroup	I
HS Code	28121042
Hazardous Substances Data	10545-99-0(Hazardous Substances Data)

MSDS

Provider	Language
Sulfur dichloride	English
SigmaAldrich	English

Usage And Synthesis

Chemical Properties

Reddish-brown, fuming liquid; pungent chlorine odor. Decomposes in water and alcohol; soluble in benzene.

Uses

Chlorine carrier or chlorinating agent, rubber vulcanizing, vulcanized oils, purifying sugar juices, sulfur solvent, chloridizing agent in metallurgy, manufacture of organic chemicals and insecticides.

Reactions

(carbamoyl)disulfanyl chlorides were prepared by (i) addition of limiting aromatic secondary amine to (chlorocarbonyl)disulfanyl chloride; (ii) Harris reactions of sulfur dichloride (SCl2) with appropriate O-alkyl N-methyl-N-arylthiocarbamates; and (iii) regiospecific chlorolysis of bis(N-methyl-N-arylcarbamoyl)disulfanes^[1].

Hazard

Toxic by inhalation and ingestion, strong irritant to tissue.

Safety Profile

Poison irritant and corrosive to shin, eyes, and mucous membranes. Flammable when exposed to heat or flame. Reacts violently with Al, NH3, K, Na, acetone, dunethyl sulfoxide, water, oxidants, metals, hexafluoroisopropylidene amino lithium, and toluene. Reactive with water or steam. When heated to decomposition it emits very toxic fumes of SOx and Cl-.

Purification Methods

Distil sulfur chloride twice in the presence of a small amount of PCl3 through a 12in Vigreux column (p 11), the fraction boiling between 55-61o being redistilled (in the presence of PCl3), and the fraction distilling between 58-61o retained. (The PCl3 is added to inhibit the decomposition of SCl2 into S2Cl2 and Cl2). The SCl2 must be used as quickly as possible after distillation — within 1hour at room temperature. The sample contains 4% of S2Cl2. On long standing this reaches 16-18%. [Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I pp 371-372 1963.] HARMFUL VAPOURS.

References

[1] Goldblatt, P. T., Thompson, T. R., Brennessel, W. W., Smith, T. G., Schrader, A. M., Goebel, E. S., Henley, M. J., Lovstedt, A., Young, V. G., Jr., & Barany, G. (2025). Synthetic Routes to, Stabilities and Transformations of, and Characterization of (Carbamoyl)disulfanyl Chlorides and Related Compounds1,2. Molecules, 30(19), 3892. https://doi.org/10.3390/molecules30193892

Preparation Products And Raw materials