Benzenesulfonyl hydrazide

Benzenesulfonyl hydrazide appears as a white to light-colored crystalline solid. Insoluble in water and denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Readily ignited by sparks or flames and burns vigorously. Used to make other chemicals.

This chemical does not meet GHS hazard criteria for 4.1% (2 of 49) of reports.

Danger

H228 (10.2%): Flammable solid [Danger Flammable solids]；H242 (85.7%): Heating may cause a fire [Danger Self-reactive substances and mixtures; Organic peroxides]；H302 (10.2%): Harmful if swallowed [Warning Acute toxicity, oral]

P210, P234, P235, P240, P241, P264, P270, P280, P301+P317, P330, P370+P378, P403, P410, P411, P420, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 49 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Reported as not meeting GHS hazard criteria per 2 of 49 reports by companies.；There are 6 notifications provided by 47 of 49 reports by companies with hazard statement code(s).；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Chemical: Benzenesulfonic acid, hydrazide

Status: Active Update: 28-05-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/28399

Benzenesulfonic acid, hydrazide: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；Self-decomposition, self-polymerization, or self-ignition may be triggered by heat, chemical reaction, friction or impact. May be ignited by heat, sparks or flames. Some may decompose explosively when heated or involved in a fire. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. May burn violently. Decomposition or polymerization may be self-accelerating and produce large amounts of gases. Vapors or dust may form explosive mixtures with air. (ERG, 2024)

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce irritating, toxic and/or corrosive gases. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；SMALL FIRE: Dry chemical, CO2, water spray or regular foam.；LARGE FIRE: Flood fire area with water from a distance. If it can be done safely, move undamaged containers away from the area around the fire.；FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: BEWARE OF POSSIBLE CONTAINER EXPLOSION. Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch or walk through spilled material. Stop leak if you can do it without risk.；SMALL SPILL: Pick up with inert, damp, non-combustible material using clean, non-sparking tools and place into loosely covered plastic containers for later disposal. Prevent entry into waterways, sewers, basements or confined areas. (ERG, 2024)

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.；LARGE SPILL: Consider initial evacuation for at least 250 meters (800 feet) in all directions.；FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Excerpt from ERG Guide 149 [Substances (Self-Reactive)]:；Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)

Chemical: Benzenesulfonic acid, hydrazide

Status: Active Update: 28-05-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/28399

Benzenesulfonic acid, hydrazide: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.