HomeProducts

Sulfuryl chloride

CAS Number
7791-25-5
EC Number
232-245-6
Chemical Formula
Cl2O2S
Molecular Weight
134.97 g/mol

Description

Sulfuryl chloride (CAS 7791-25-5 ), also known as sulfuric oxychloride and abbreviated SO2Cl2, is a reactive inorganic chlorinating and sulfonating agent used across chemical synthesis and industrial processing. It delivers both chlorination and sulfonation in a single reagent, reducing the need for multiple process steps. In pharmaceutical manufacturing, it serves as a chlorinating agent in the synthesis of active pharmaceutical ingredients. This reagent is particularly valued in intermediates where precise reactivity control is required. Pulp and paper producers use it as a bleaching agent to achieve target brightness levels in processed fiber. Textile and leather processors apply it for whitening treatments and surface modification of natural substrates. In water treatment, it functions as a biocidal agent contributing to disinfection and microbial control. These applications are critical for maintaining hygiene in industrial water systems. Sulfuryl chloride is supplied as a fuming liquid, typically in cylinders, drums, or ISO tank containers depending on volume. It is available in technical grade, with purity levels commonly at 97% or higher for industrial applications. Pharmaceutical-grade material meeting stricter purity specifications is also available for regulated synthesis. Contact us for supply of Sulfuryl chloride Request Quote

Other Names (Synonyms)

sulphuryl dichloride | sulfuryl dichloride | sulfuric oxychloride | sulfuric dichloride | Sulfuric chloride | sulfur dichloride dioxide | Sulfonyl chloride | SO2Cl2

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-54.1 °C
Boiling Point69.3 °C
Density1.6674 g/cm³ @ Temp: 20 °C
Flash Point69.1°C
AppearanceA colorless to light yellow fuming liquid. Pungent acrid odor.
ColorClear colorless to yellow
FormLiquid
Water Solubilityreacts
Vapor Pressure100 mm Hg ( 17.8 °C)
Refractive Indexn 20/D 1.443(lit.)

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS06· ToxicGHS08· Health Hazard

Hazard Statements

H314
H314
H318
H318
H330
H330
H335
H335
H370
H370
H372H372

Precautionary Statements

P260
P260
P261
P261
P264
P264
P270
P270
P271
P271
P280
P280
P284
P284
P316
P316
P317
P317
P319
P319
P320
P320
P321
P321
P363
P363
P405
P405
P501
P501
P265
P265
P340
P340
P316
P316
P233
P233
P331
P331
P354
P354
P338

Trade & Regulatory

HS Code28121099
UN Number2927
ADR Class6.1
Packing GroupII
Storage Class6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)2