- Benzenesulfonic acid chloride
- Benzene sulfonechloride
Colorless, oily liquid.
Chemical intermediate for benzene sulfonamides, thiophenol, glybuzole (hypoglycemic agent), n-2-chloroethyl amides, benzonitrile, for its esters-useful as insecticides, miticides, for fenson acaricide (former use).
Registry Numbers and Inventories.
R 22 23/24 34 42/43
S 23 26 36/37/39 45
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
0.03 (25 C)
Vapor density (air=1)
1.3842 g/cm3 (20 C)
Solubility in water
40.66 g/s2 (40 C)
1.5472 (20 C)
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Keep from contact with oxidizing materials. Corrosives area. Water free area.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Use caution when opening. Can explode without warning when caps of old containers are unscrewed. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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. Wear an impervious apron. Clothing: Wear appropriate protective clothing to prevent skin exposure. Wear an impervious apron.
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.
Large spills may be neutralized with dilute alkaline solutions of soda ash, or lime. Absorb the liquid and scrub the area with detergent and water. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Do not get water inside containers. A vapor suppressing foam may be used to reduce vapors.
Stable at room temperature in closed containers under normal storage and handling conditions.
Strong oxidizing agents, strong bases, dimethyl sulfoxide, methyl formamide, and water or moisture.
Hydrogen chloride, chlorine, carbon monoxide, oxides of sulfur, carbon dioxide.
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. Containers may explode in the heat of a fire. May react exothermically with water, causing liberation of heat and possible spattering of material. Contact with metals may evolve flammable hydrogen gas. Combustible material; may burn but does not ignite readily. Extinguishing media: Do NOT get water inside containers. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. Most foams will react with the material and release corrosive/toxic gases. Cool containers with flooding quantities of water until well after fire is out. For small fires, use dry chemical, dry sand, alcohol-resistant foam.
Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may 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. Contact with metals may evolve flammable hydrogen gas.
May contain highly toxic and irritating hydrogen chloride and oxides of chlorine and sulfur.
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.
Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May be harmful if swallowed.
Causes chemical burns to the respiratory tract. May cause pulmonary edema and severe respiratory disturbances.
Causes skin burns.
Causes eye burns.
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.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Get medical aid immediately. Extensive irrigation is required (at least 30 minutes).