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Diamond	Hazard	Value	Description
1 3 2 W	Health	3	Can cause serious or permanent injury.
	Flammability	1	Must be preheated before ignition can occur.
	Instability	2	Readily undergoes violent chemical changes at elevated temperatures and pressures.
	Special	W	Reacts violently or explosively with water.

Colorless to black solid. Odorless or nearly odorless. (USCG, 1999)

• Strong Oxidizing Agent
• Known Catalytic Activity

Water soluble.

Special Hazards of Combustion Products: Irritating oxides of sulfur may be formed. (USCG, 1999)

Contact with eyes or skin causes severe irritation. Ingestion causes irritation of mouth and stomach. (USCG, 1999)

TOLUENE SULFONIC ACID, LIQUID, WITH MORE THAN 5% FREE SULFURIC ACID reacts exothermically with chemical bases (for example: amine, amides, and inorganic hydroxides). The reactions can generate dangerously large amounts of heat in small spaces. Dissolution in water or dilution of concentrated solutions with water may generate significant heat. Reacts with sodium hypochlorite to produce chlorine gas. Can react with active metals, including iron and aluminum, and also many less active metals, to dissolve the metal and liberate hydrogen and/or toxic gases. Can initiate possibly violent polymerization in certain alkenes such as allyl chloride. Reacts with cyanide salts and compounds to release gaseous hydrogen cyanide. Flammable and/or toxic gases are also often generated by reactions with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents. Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates: the carbon dioxide gas from the last is nontoxic but the heat and spattering from the reaction can be troublesome. Can catalyze (increase the rate of) chemical reactions. May burn but not ignited readily. Incompatible with carbides, bromates, chlorates, fulminates, picrates, and powdered metals [Haz. Chem. Data 1966]. Produces highly toxic fumes of oxides of sulfur when heated to decomposition.

• Acids, Strong Oxidizing

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Cellulose-Based Absorbents
• Expanded Polymeric Absorbents

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible)]:

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.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

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)

Fire Extinguishing Agents: Water (USCG, 1999)

Neutralizing Agents for Acids and Caustics: Flush with water, rinse with dilute sodium bicarbonate or lime solution. (USCG, 1999)

Chemical goggles or face shield; rubber gloves (USCG, 1999)

No information available.

EYES: wash thoroughly with copious amounts of water for at least 15 min.; call physician if irritation persists.

SKIN: wash thoroughly with large amounts of water for at least 15 min.

INGESTION: give large amount of water. (USCG, 1999)

• AR-TOLUENESULFONIC ACID
• CYZAC 4040
• K-CURE 1040
• METHYLBENZENESULFONIC ACID
• 4-METHYLBENZENESULFONIC ACID
• NACURE 1040
• P-METHYLBENZENESULFONIC ACID
• P-METHYLPHENYLSULFONIC ACID
• P-TOLUENESULFONIC ACID
• P-TOLUENESULPHONIC ACID
• P-TOLYLSULFONIC ACID
• P-TSA
• TOLUENE SULFONIC ACID, LIQUID, WITH MORE THAN 5% FREE SULFURIC ACID
• TOLUENE SULFONIC ACID, [LIQUID]
• TOLUENE SULPHONIC ACID, LIQUID, WITH MORE THAN 5% FREE SULPHURIC ACID
• TOLUENESULFONIC ACID
• 4-TOLUENESULFONIC ACID
• TOSIC ACID