Product Identification

Product Name

N-Carbonylsulfamyl chloride

Synonyms

Chlorosulfonyl isocyanate
N-(Oxomethylidene)sulfamoyl chloride
N-Chlorosulfonyl isocyanate
N-Chlorosulphonyl isocyanate

CAS

1189-71-5

Formula

CClNO3S

Molecular Weight

141.53

EINECS

214-715-2

Beilstein/Gmelin

1237247

Beilstein Reference

4-03-00-00086

EC Class

harmful, corrosive, sensitizing

Physical and Chemical Properties

Appearance

Very slightly yellow liquid.

Solubility in water

Slightly soluble

Melting Point

-44

Boiling Point

107

Vapor Pressure

193 (20 C)

Density

1.62 g/cm3

Usage

Chlorination agent.

Vapor Density

4.88

Refractive Index

1.4467 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure. Destroy contaminated shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C).

Handling

Wash thoroughly after handling. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Use with adequate ventilation. Discard contaminated shoes.

Hazards Identification

Ingestion

May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. The toxicological properties of this substance have not been fully investigated.

Inhalation

Causes chemical burns to the respiratory tract.

Skin

May cause skin irritation. Causes skin burns.

Eyes

May cause eye irritation. Causes eye burns.

Hazards

Vapors form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.

EC Risk Phrase

R 14 22 34 42/43

EC Safety Phrase

S 23.2 26 36/37/39 45

UN (DOT)

3080

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

>110

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas. Extinguishing media: For large fires, use water spray, fog, or alcohol-resistant foam. Cool containers with flooding quantities of water until well after fire is out. For small fires, use dry chemical, dry sand, alcohol-resistant foam.

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

Stability and Reactivity

Disposal Code

12

Stability

Stable under normal temperatures and pressures. Fuming liquid.

Incompatibilities

Strong oxidizing agents.

Decomposition

Hydrogen chloride, hydrogen cyanide, nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide, nitrogen.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

3080

Hazard Class

6.1

Packing Group

II

HS Code

2851 00 80