Synonyms: Benzenemonosulfonic acid,phenylsulfonic acid, acide benzenesulfonique; benzene sulphonic acid; besylic acid
CAS No.: 98-11-3
EINECS: 202-638-7
MF: C6H6O3S
MW: 158.18
S.F.: 
Appearance: Blackish-brown liquid or white to colorless crystal
Technical index:
Benzenesulfonic acid 98%, benzenesulfonic acid 93%
Packing: 40Kg for spec.98%, 250Kg for spec.93%
Purpose: Sulfonic acid is a compound with general formula RSO2OH, where R is an aliphatic or aromatic hydrocarbon. It is a derivative of sulfuric acid (HOSO2OH) where an OH has been replaced by a carbon group or a compound where a hydrogen atom has been replaced by treatment with sulfuric acid; for example, benzene is converted to Benzenesulfonic Acid (water-soluble).
Application: Benesulfonic acid can be used as experimental reagent, catalyst, also used for organic synthesis and phenol manufacturing, can also be used for alkali melting phenol, also used for resorufacol, etc., often used as a catalyst in esterification and dehydration reactions. Benzenesulfonic acid is used in oil field water injection, which can relieve the blocking of the formation and improve the permeability of the formation. As acid of acidified injection Wells, benzene sulfonic acid is characterized by slow reaction with carbonate, and the greater the concentration, the slower the reaction speed, and can acidize the far-reaching formation. Compared with hydrochloric acid, benzene sulfonic acid (and mixed aryl sulfonic acid) has a long validity period, small corrosion, and safe use. Benzenesulfonic acid is also used as a catalyst for esterification and dehydration reactions and as a curing agent in the foundry industry.
Q: Handling and storage?
Operation precautions: Airtight operation, local exhaust. The operators must undergo special training and strictly abide by each step of the operating procedures. It is recommended that operators wear dust masks, one-piece adhesive tape protective clothing, and rubber gloves. Avoid generating dust and the contact with oxidants, acids, and alkalis. Load and unload lightly is necessary to prevent damage to packaging and containers when handling. Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.
Precautions for storage: Store it in a cool, ventilated warehouse. Keep away from fire and heat sources. It should be stored separately from oxidants, acids, alkalis, and food chemicals, and should not be stored together. Storage areas should be equipped with suitable materials to contain spills.During transportation, it should be protected from sun exposure, rain and high temperature. Transport vehicles and vessels must be thoroughly cleaned and disinfected, otherwise no other items may be shipped.
Q: The emergency measures?
Skin Contact: Take off contaminated clothing immediately, wash contact parts thoroughly with soap and water.
Eye contact: Immediately open the upper and lower eyelids and rinse with running water for 15 minutes. Seek medical attention.
Inhalation: Quickly leave the scene to fresh air. Give oxygen if breathing is difficult. If breathing stops, give artificial respiration immediately and seek medical attention.
Ingestion: If swallowed by mistake, drink milk or egg white. Seek medical attention.
Q: Spill emergency treatment?
Isolate the leakage pollution area, set up warning signs around, emergency personnel wear gas masks and gloves, rinse with a lot of water, and put the diluted lotion into the waste water system. In case of a large amount of leakage, collect and recycle or discard after harmless treatment.