The hazards of Benzenesulfonyl chloride

Benzenesulfonyl chloride is acolorless to slightly yellow solid that melts at approximately 40F. Very irritating to skin, eyes and mucous membranes. May emit toxic fumes when heated to high temperatures. Used to make dyes and other chemicals. Molecular Formula is C6-H5-Cl-O2-S, Molecular Weight is 176.62, and CAS NO is 98-09-9.

The major hazards encountered in the use and handling of benzenesulfonyl chloride stems from its toxicologic properties. Toxic by all routes (ie, inhalation, ingestion, and dermal contact), exposure to this colorless, oily liquid may occur from its manufacture and use as a catalyst, an intermediate in the production of phenols,amides, insecticides, miticides, and acaricides, and as a reagent for Friedel-Crafts sulfonation. 

Effects from exposure may include contact burns to the skin and eyes, and liver damage. In activities and situations where over-exposure may occur, wear a positive pressure self-contained breathing apparatus, and chemical protective clothing which has been specifically recommended by the shipper or manufacturer. 

If contact Benzenesulfonyl chloride(CAS NO: 98-09-9)should occur, immediately irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes, and wash exposed skin thoroughly with soap and water. Remove contaminated clothing and shoes at the site. While benzenesulfonyl chloride does not ignite easily, it may burn with the production of poisonous gases.

Run off from fire control water may cause pollution. For fires involvin g benzenesulfonyl chloride, extinguish with dry chemical, CO2, water spray, fog, or regular foam. Small spills of this substance may be taken up with sand or other noncombustible absorbent and placed into containers for later disposal. Large spills should first be diked far ahead of the spill. Benzenesulfonyl chloride is a potential candidate for liquid injection or rotary kilnforms of incineration.

Insoluble and stable in cold water; decomposes in hot water to produce corrosive and toxic hydrochloric acid and benzenesulfonic acid. Rate of reaction decreases as temperature decreases.Special Hazards of Combustion Products: May contain highly toxic and irritating hydrogen chloride and oxides of chlorine and sulfur.

Cylinder may explode; decomposes to produce highly toxic chlorine and sulfur compounds. Reacts with hot water to produce highly toxic and corrosive hydrochloric acid and benzenesulfonic acid. May be fatal if inhaled, swallowed or absorbed through skin. Contact may cause skin and eye burns. Irritating to eyes, skin and mucous membranes. INGESTION: May cause abdominal spasm and vomiting. 

Benzenesulfonyl chloride is incompatible with strong oxidizing agents and bases, including amines. Corrodes metals in the presence of water due to slow formation of hydrochloric acid and benzenesulfonic acid. Benzenesulfonyl chloride may react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts

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