4-Aminobenzoic acid

Public-database records for 4-Aminobenzoic acid (CAS 150-13-0), reproduced here for independent cross-checking.

Safety classification and hazard statements

Regulatory listings

Physical description and handling notes

• P-aminobenzoic acid appears as colorless crystals that discolor on exposure to light and air. (NTP, 1992)
• Light beige, odorless solid; pure form is white; discolor on exposure to light and air; [Hawley] White crystalline solid; [MSDSonline]
• Solid
• Monoclinic prisms from dilute alcohol
• Light buff crystals; white when pure
• Yellowish to red crystals or prisms

Reported physical properties

How this substance is indexed

Documented uses

• Used to make local anesthetics, folic acid, and azo dyes; Also used in feed additives, sunscreens, and medications; [HSDB] Occurs naturally as B complex factor--about 10-100 ppm in brewer's yeast;
• Farming (Feed Additives) [Category: Industry]
• Manufacture /of/ various esters (local anesthetics), folic acid, and azo dyes; ... . Used in laboratories as sulfonamide antagonist.
• Dye intermediate, pharmaceuticals, nutrition, UV absorber in suntan lotions.
• Used principally in the pharmaceuticals industry; other uses are as a cross-linking agent for polyurethane resins, dyes, and feedstock additives.
• Use (kg; approx.) in Germany (2009): >2500

Names this substance appears under

4-aminobenzoic acid; 150-13-0; p-aminobenzoic acid; PABA; Vitamin BX; p-Carboxyaniline; para-aminobenzoic acid; Sunbrella; 4-Carboxyaniline; Paraminol; Pabacyd; Amben; Benzoic acid, 4-amino-; p-Carboxyphenylamine; Pabafilm; Pabamine

Computed molecular descriptors

Database abstract

4-Aminobenzoic acid · CAS 150-13-0 · C7H7NO2. UNII TL2TJE8QTX. 熔点: 370 to 372 °F (NTP, 1992); 熔点: 188.5; 熔点: 188.5 °C.

Source: PubChem / Wikidata; the batch COA governs where values differ.