2-Naphthalenesulfonic acid

Synonyms

beta-Naphthalenesulfonic acid; beta-Naphthylsulfonic acid; Kyselina 2-naftalensulfonova [Czech]; Naphthalene-2-sulphonic acid; [ChemIDplus] 2-Sulfonaphthalene; [Merck Index] Naphthalene-2-sulfonic acid; [IUCLID] UN2583

Category

Naphthalenes

Description

Hygroscopic solid; [Sigma-Aldrich MSDS]

Sources/Uses

Used to make beta-naphthol and intermediates; [Merck Index] Used as a laboratory reagent, monomer in thermoplastic manufacture, intermediate for large scale chemicals, in the processing of textiles, leather, fur, and paper-pulp-paper products, and as plastifier for concrete mixtures; [ExPub: ECHA REACH Registrations]

Comments

A severe skin irritant in guinea pigs; A severe eye irritant in rabbits (causes permanent injury); Oral LD50 (rat) = 400 mg/kg; [IUCLID] May contain up to 15% sulfuric acid (CAS# 7664-93-9) as residual of manufacture; Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Targets the teeth and cardiovascular system; "The International Agency for Research on Cancer (IARC) has determined that occupational exposure to strong-inorganic-acid mists containing sulfuric acid is carcinogenic to humans (group 1)"; [Sigma-Aldrich MSDS] See "2-Naphthalenesulfonic acid, sodium salt."

Biomedical References

2.3E-08 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Aryl sulfonic acids, solid, with more than 5% free Sulfuric acid."

Yes

Skin burns

Processes

Industrial Processes with risk of exposure:

• Cement Producing
• Fur Dressing and Dyeing
• Leather Tanning and Processing
• Pulp and Paper Processing
• Textiles (Fiber & Fabric Manufacturing)