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2-Amino-5-methylbenzenesulfonic acid (4b Acid)

2-Amino-5-methylbenzenesulfonic acid (4b Acid)

CAS Number: 88-44-8

Molecular Formula: C7H9NO3S

About 2-Amino-5-methylbenzenesulfonic acid (4b Acid)

2-Amino-5-methylbenzenesulfonic acid (CAS 88-44-8) serves as a vital sulfonic acid building block in the high purity fine chemicals sector, where it is extensively utilized by American manufacturers for the synthesis of high-performance acid dyes and organic pigments like Pigment Red 57:1. 4-Aminotoluene-3-sulfonic aci...

2-Amino-5-methylbenzenesulfonic acid (4b Acid) Specifications

CAS Number

88-44-8

Molecular Formula

C7H9NO3S

IUPAC Name

2-amino-5-methylbenzenesulfonic acid

Canonical SMILES

CC1=CC(=C(C=C1)N)S(=O)(=O)O

InChI Key

LTPSRQRIPCVMKQ-UHFFFAOYSA-N

HSN No

29214300

CAS Number

88-44-8

Molecular Formula

C7H9NO3S

IUPAC Name

2-amino-5-methylbenzenesulfonic acid

Canonical SMILES

CC1=CC(=C(C=C1)N)S(=O)(=O)O

InChI Key

LTPSRQRIPCVMKQ-UHFFFAOYSA-N

HSN No

29214300

Precautionary Statement Codes

P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501

Hazard Classes and Categories

Skin Corr. 1B (26.2%)

Dye Intermediate

A versatile aromatic organic intermediate mainly used in the preparation of acid dyes, reactive dyes, and organic pigments such as Pigment Red 6B, Litholbromine Red BK, and Pigment Brilliant Yellow Red BL

Organic Pigment Precursor

A critical building block used for the production of pigment C.I. 57:1 (Pigment Brilliant Red 6B) and other specialized pigments used in coloring inks, plastics, rubber, and daily chemical products

Chemical Synthesis Intermediate

A functionalized benzene derivative utilized in the synthesis of pharmaceuticals, pesticides, and other fine chemical products

Laboratory Reagent

A high-purity chemical used in academic and industrial research for chemical analysis and the development of complex organic molecules.

2-Amino-5-methylbenzenesulfonic acid (4b Acid) FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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