4-Aminobenzoic acid CAS#150-13-0

4-Aminobenzoic acid , Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name: 4-Aminobenzoic acid 

CAS No.:150-13-0

Molecular FormulaC7H7NO2

Average mass136

Appearance: White to off white crystalline powder

Sample: Available

4-Aminobenzoic acid CAS#150-13-0

Description of 4-Aminobenzoic acid

4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the number 4 carbon in the benzene ring is also known as the para position) is an organic compound with the formula H2NC6H4CO2H. PABA, a white-grey crystalline substance, is only slightly soluble in water. It consists of a benzene ring substituted with an amino group and a carboxyl group.

Basic Info of 4-Aminobenzoic acid

Chemical Name

4-aminobenzoic acid


4-Aminobenzoic acid;PABA,Vitamin Bx,Vitamin H1;Benzoic acid, 4-amino-;



Molecular Formula


Molecular Weight






Safety Info



Safety Statements


HS Code


WGK Germany


Risk Statements


Hazard Codes


Caution Statement

P261; P280; P305 + P351 + P338



Hazard Declaration

H315; H317; H319; H335; H413

Signal Word



Appearance & Physical State

White to off white crystalline powder



Boiling Point

339.9ºC at 760 mmHg

Melting Point


Flash Point


Refractive Index


Water Solubility

4.7 g/L (20 ºC)


Stable. Incompatible with strong oxidizing agents. Combustible. Sensitive to light and air. May discolour on exposure to light.

Storage Condition


Vapor Pressure

3.45E-05mmHg at 25°C

Numbering system
MDL numberMFCD00007894
EINECS number205-753-0
RTECS numberDG1400000
BRN number471605
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What is 4-Aminobenzoic acid?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Ambroxan which has developed particularly rapidly in recent years. Do you know about Ambroxan?

The official answer: Para-aminobenzoic acid (PABA) is a compound formed when the para-position (4-position) on the benzene ring of benzoic acid is substituted with an amino group

What’s the application of 4-Aminobenzoic acid?

1.Use as intermediate of medicine and dyestuff


2.Use as dyestuff and pharmaceutical intermediates. Used in the production of reactive red M-80, M-10B, reactive red violet X-2R and other dyestuffs as well as the production of cyanobenzoic acid to produce the drug p-carboxybenzylamine. P-aminobenzoic acid can be used as sunscreen, its derivatives p-dimethylcarbamic acid octyl ester, is an excellent sunscreen agent, the trade name PadimateO.



  1. Use as a reagent for the determination of copper. It is used in the synthesis of esters, folic acid and azo dyes. Use as an analytical reagent, sunscreen, also used in pharmaceutical and dye industry


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United Kingdom Giles
United Kingdom Giles
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Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
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In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
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Canada Kate
Canada Kate
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I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
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Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...