ChemicalBook > CAS DataBase List > 2-Amino-4-chloro-5-methylbenzenesulfonic acid

2-Amino-4-chloro-5-methylbenzenesulfonic acid

Product Name
2-Amino-4-chloro-5-methylbenzenesulfonic acid
CAS No.
88-51-7
Chemical Name
2-Amino-4-chloro-5-methylbenzenesulfonic acid
Synonyms
2B ACID;red2bacid;2B-SAEURE;uene-5-suL;2BAcid/4BAcid;permanentred2bamine;Amino-chloro-5-methy;LABOTEST-BB LT01138546;brillianttoningredamine;Aminochlorotoluenesulfonicacid
CBNumber
CB8118882
Molecular Formula
C7H8ClNO3S
Formula Weight
221.66
MOL File
88-51-7.mol
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2-Amino-4-chloro-5-methylbenzenesulfonic acid Property

Melting point:
>300°C
Boiling point:
163°C (rough estimate)
Density 
1.3031 (rough estimate)
vapor pressure 
0-0Pa at 25℃
refractive index 
1.6210 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
Aqueous Acid (Slightly), DMSO (Slightly)
form 
Solid
pka
-1.58±0.50(Predicted)
color 
Off-White to Pale Red
LogP
-0.97--0.89 at 23℃ and pH2.6
CAS DataBase Reference
88-51-7(CAS DataBase Reference)
EPA Substance Registry System
Benzenesulfonic acid, 2-amino-4-chloro-5-methyl- (88-51-7)
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Safety

Risk Statements 
36/37/38
Safety Statements 
26-36/37/39
RIDADR 
3261
RTECS 
XT6330000
HS Code 
2921.43.9020
HazardClass 
8
PackingGroup 
III
Hazardous Substances Data
88-51-7(Hazardous Substances Data)
Toxicity
LD50 oral in rat: 12300mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
S432032
Product name
6-AMINO-4-CHLORO-META-TOLUENESULFONIC ACID
Purity
Aldrich<sup>CPR</sup>
Packaging
1 unit
Price
$185
Updated
2025/07/31
Sigma-Aldrich
Product number
S432032
Product name
6-AMINO-4-CHLORO-META-TOLUENESULFONIC ACID
Purity
Aldrich
Packaging
1g
Price
$179
Updated
2024/03/01
TCI Chemical
Product number
A0286
Product name
4-Amino-2-chlorotoluene-5-sulfonic Acid
Purity
>98.0%(HPLC)(T)
Packaging
25g
Price
$28
Updated
2025/07/31
TCI Chemical
Product number
A0286
Product name
4-Amino-2-chlorotoluene-5-sulfonic Acid
Packaging
500G
Price
$84
Updated
2025/07/31
TCI Chemical
Product number
A0286
Product name
4-Amino-2-chlorotoluene-5-sulfonic Acid
Packaging
500G
Price
$84
Updated
2025/07/31
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2-Amino-4-chloro-5-methylbenzenesulfonic acid Chemical Properties,Usage,Production

Chemical Properties

White to buff powder. Essentially insoluble as free acid; soluble as sodium or ammonium salt.

Uses

Intermediate for azo pigments.

Uses

2-Amino-4-chloro-5-methylbenzenesulfonic Acid is used in method for preparing environment-friendly organic pigment for agricultural seed coating.

Production Methods

The compound is made by baking 3-chloro-4-methyl-benzeneamine hydrogensulfate in vacuo at 195 ℃.

References

[1] Patent: KR2015/104064, 2015, A. Location in patent: Paragraph 0161-0165
[2] Patent: KR2016/92961, 2016, A. Location in patent: Paragraph 0151-0159
[3] Patent: DE175378,
[4] Patent: DE175378,

2-Amino-4-chloro-5-methylbenzenesulfonic acid Preparation Products And Raw materials

Raw materials

Nitrotoluene Sodium sulfide 3-Chloro-4-methylaniline 4-Nitrotoluene 2-Chloro-4-nitrotoluene

Preparation Products

Pigment Red 48:1 Pigment Red 21 Pigment Red 48:2 Pigment Red 48:3 Pigment Fast Dark Red BBM
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2-Amino-4-chloro-5-methylbenzenesulfonic acid Suppliers

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View Lastest Price from 2-Amino-4-chloro-5-methylbenzenesulfonic acid manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
2-Amino-4-chloro-5-methylbenzenesulfonic acid 88-51-7
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-11-04
Hebei Chuanghai Biotechnology Co,.LTD
Product
2-Amino-4-chloro-5-methylbenzenesulfonic acid 88-51-7
Price
US $5.00-2.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10000kg
Release date
2024-08-23
Henan Fengda Chemical Co., Ltd
Product
2-Amino-4-chloro-5-methylbenzenesulfonic acid 88-51-7
Price
US $100.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-25

88-51-7, 2-Amino-4-chloro-5-methylbenzenesulfonic acidRelated Search:

Nickel bis(sulphamidate) Aniline-2-sulfonic acid Epichlorohydrin Ethyl 2-(Chlorosulfonyl)acetate Sulfamic acid Glycine 2-Chlorotoluene Sodium xylenesulfonate 4-Nitrotoluene-2-sulfonic Acid Folic acid Sodium p-toluenesulfonate Sulfanilic acid p-Toluenesulfonic acid N,N-Dimethyl-p-toluidine Sulfamic acid monosodium salt p-Toluidine 4-Amino-benzenesulfonic acid monosodium salt Citric acid

  • 5-amino-4-chloro-2-methylbenzenesulfonic acid
  • Aminochlorotoluenesulfonicacid
  • 2-CHLORO-4-AMINO TOLUENE-5-SULFONIC ACID
  • 2B ACID
  • 2-AMINO-4-CHLORO-5-METHYLBENZENESULFONIC ACID
  • 2-CHLORO-PARATOLUIDINE-5-SULFONIC ACID
  • 2-Chloro-4-Aminotoluene-5-Sulphonic Acid (2B Acid)
  • 2BAcid/4BAcid
  • 3-CHLORO-4-TOLUIDINE-6-SULFONIC ACID
  • o-Chloroparatoluidine-5-Sulfonric Acid
  • 2-amino-4-chloro-5-methylbenze
  • Benzenesulfonic acid, 2-amino-4-chloro-5-methyl-
  • 2B ACID, 2-CHLORO-4-AMINOTOLUENE-5-SULFONIC ACID
  • 2-CHLORO-4-AMINO TOLUENE-SULFONIC ACID
  • 4-AMINO-2-CHLOROTOLUENE-5-SULFONIC ACID 98%
  • 2,6-Diiodocyclohexa-2,5-diene-1,4-dione
  • 6-AMINO-4-CHLORO-META-TOLUENESULFONICACID
  • 4-Amino-2-chloroluene-5-sulfonic Acid
  • Amino-chloro-5-methy
  • Amino-chloro-5-methylbenzenesulfonic acid
  • 2-aMino-4-chloro-5-Methylbenzene-1-sulfonic acid
  • 5-Chloro-4-methylaniline-2-sulfonic Acid 5-Chloro-p-toluidine-2-sulfonic Acid 2-Amino-4-chloro-5-methylbenzenesulfonic Acid
  • 5-CHLORO-4-METHYLANILINE-2-SULFONIC ACID
  • 5-CHLORO-P-TOLUIDINE-2-SULFONIC ACID
  • 6-AMINO-4-CHLORO-M-TOLUENE SULFONIC ACID
  • 2-Amino-4-Chloro-3-methylbenzenesulfonicacid
  • 2-amino-4-chloro-5-methyl-benzenesulfonicaci
  • 2-chloro-4-toluidine-5-sulfonicacid
  • 2-chloro-p-toluidine-5-sulfonicacid
  • 6-amino-4-chloro-3-toluenesulfonicacid
  • 6-amino-4-chloro-m-toluenesulfonicaci
  • acide2-amino-4chloro-5methylbenzenesulfonique
  • brillianttoningredamine
  • kyselina2-chlor-4-toluidin-5-sulfonova
  • kyselina2-chlor-4-toluidin-5-sulfonova(czech)
  • permanentred2bamine
  • red2bacid
  • LABOTEST-BB LT01138546
  • 3-chloro-4-methylaniline-6-sulfonicacid
  • 4-Amino-2-chlorotolulene-5-sulfonic
  • 4-Chloro-5-methyl-2-aminobenzenesulfonicacid
  • 4-amino-6-chlorotoluene-3-sulphonic acid
  • 4-AMINO-2-CHLORO-5-SULFOTOLUENE
  • 4-AMINO-2-CHLOROTOLUENE-5-SULFONIC ACID
  • 2B-SAEURE
  • 4-Amino-2-chlorotoluene-5-sulfonic Acid &gt
  • uene-5-suL
  • 2-Amino-4-chloro-5-methylbenzenesulfonic acid ISO 9001：2015 REACH
  • 88-51-7 2-Amino-4-chloro-5-methylbenzenesulfonic acid
  • 2 B Acid/2-Amino-4-chloro-5-methylbenzenesulfonic acid
  • 88-51-7
  • 88-51-6
  • API Intermediate
  • Intermediates
  • Intermediates of Dyes and Pigments