ChemicalBook >> CAS DataBase List >>2-Aminotoluene-5-sulfonic acid
2-Aminotoluene-5-sulfonic acid
- CAS No.
- 98-33-9
- Chemical Name:
- 2-Aminotoluene-5-sulfonic acid
- Synonyms
- OTS;4-AMINO-3-METHYLBENZENESULFONIC ACID;2-TOLUIDINE-5-SULFONIC ACID;6-Amino-m-toluensulfonic acid;4-Amino-3-methylbenzene-1-sulfonic acid;2-Amino-5-sulfotoluene;2-Methyl-4-sulfoaniline;3-methylsulphanilic acid;2-Aminotoluene-5-sulfoni;o-Toluidine-4-sulfonic acid
- CBNumber:
- CB4450302
- Molecular Formula:
- C7H9NO3S
- Molecular Weight:
- 187.22
- MDL Number:
- MFCD00025198
- MOL File:
- 98-33-9.mol
- MSDS File:
- SDS
Last updated:2026-05-28 03:28:03
| Product description | Number | Pack Size | Price |
| 6-AMINOTOLUENE-3-SULFONIC ACID AldrichCPR | T332895 | 1 unit | $197 |
| 6-AMINOTOLUENE-3-SULFONIC ACID Aldrich | T332895 | 1g | $179 |
| 4-Amino-3-methylbenzenesulfonic acid | AAA09833 | 0.25g | $250 |
| 4-Amino-3-methylbenzenesulfonic acid | AAA09833 | 2.5g | $906.25 |
| 2-Aminotoluene-5-sulfonic acid 95% | J61885 | 5g | $12 |
| More product size | |||
| Melting point | 290°C |
|---|---|
| Density | 1.3553 (rough estimate) |
| refractive index | 1.6100 (estimate) |
| storage temp. | Storage temp. 2-8°C |
| pka | pK1: 3.125 (25°C) |
| form | powder |
| color | Faint beige to faint red/orange |
| Water Solubility | 5g/L(20 ºC) |
| InChI | InChI=1S/C7H9NO3S/c1-5-4-6(12(9,10)11)2-3-7(5)8/h2-4H,8H2,1H3,(H,9,10,11) |
| InChIKey | WQTCZINVPXJNEL-UHFFFAOYSA-N |
| SMILES | C1(S(O)(=O)=O)=CC=C(N)C(C)=C1 |
| LogP | 0.076 at 25℃ |
| CAS DataBase Reference | 98-33-9(CAS DataBase Reference) |
| FDA UNII | ET833CB2KU |
| EPA Substance Registry System | Benzenesulfonic acid, 4-amino-3-methyl- (98-33-9) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| Hazard Codes | T | |||||||||
| Risk Statements | 45-34 | |||||||||
| Safety Statements | 53-26-36/37/39-45 | |||||||||
| RIDADR | 2811 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 2921420090 | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
2-Aminotoluene-5-sulfonic acid price More Price(36)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | T332895 | 6-AMINOTOLUENE-3-SULFONIC ACID AldrichCPR | 98-33-9 | 1 unit | $197 | 2026-04-30 | Buy |
| Sigma-Aldrich | T332895 | 6-AMINOTOLUENE-3-SULFONIC ACID Aldrich | 98-33-9 | 1g | $179 | 2024-03-01 | Buy |
| Biosynth | AAA09833 | 4-Amino-3-methylbenzenesulfonic acid | 98-33-9 | 0.25g | $250 | 2026-06-04 | Buy |
| Biosynth | AAA09833 | 4-Amino-3-methylbenzenesulfonic acid | 98-33-9 | 2.5g | $906.25 | 2026-06-04 | Buy |
| AK Scientific | J61885 | 2-Aminotoluene-5-sulfonic acid 95% | 98-33-9 | 5g | $12 | 2026-06-04 | Buy |
2-Aminotoluene-5-sulfonic acid Chemical Properties,Uses,Production
Description
2-Aminotoluene-5-sulfonic acid is prepared from o-toluidine and 98 % H2SO4 via the sulfate, which is then baked. The sodium salt can be isolated after liming and precipitation of calcium sulfate. The solution can be used directly in the manufacture of dyes.
Physical properties
White to Pale-yellow to Yellow-brown Sticky Oil to Semi-Solid.
Flammability and Explosibility
Not classified
2-Aminotoluene-5-sulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
DIRECT ORANGE 118
Acid Brown 2
ACID ORANGE 8
trisodium 4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(o-tolyl)azo]-2-naphthyl]amino]carbonyl]amino]-3-[(2-methyl-4-sulphonatophenyl)azo]naphthalene-2-sulphonate
disodium 7-(benzoylamino)-4-hydroxy-3-[[3-methyl-4-[(2-methyl-4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
1of2
Global( 212)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 +8613131129325 | sales1@chuanghaibio.com | China | 5228 | 58 |
| Suzhou Sanyi Polymer Chemical Technology Co., Ltd. | +8615571922873 | 15571922873@163.com | China | 102 | 58 |
| Shaanxi Franta Biotechnology Co., Ltd | +86-13082019107 | admin@flanderff.com | China | 244 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21587 | 55 |
| Jinan Finer Chemical Co., Ltd | +86-531-88989536 +86-15508631887 | sales@finerchem.com | China | 2950 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 | sale@chuangyingchem.com | CHINA | 5906 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49979 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | factory@coreychem.com | China | 29792 | 58 |
| Antai Fine Chemical Technology Co.,Limited | 18503026267 | info@antaichem.com | CHINA | 9636 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
View Lastest Price from 2-Aminotoluene-5-sulfonic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-06-05 | 2-Aminotoluene-5-sulfonic acid
98-33-9
|
1KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2026-05-28 | 2-Aminotoluene-5-sulfonic acid
98-33-9
|
$10.00-30.00 | 10kg | 99% | 100000kg | Hebei Chuanghai Biotechnology Co,.LTD | |
 |
2025-11-18 | 2-Aminotoluene-5-sulfonic acid
98-33-9
|
$1.10 | 1g | 99.00% | 100 Tons Min | Dideu Industries Group Limited |
-
- 2-Aminotoluene-5-sulfonic acid
98-33-9
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- 2-Aminotoluene-5-sulfonic acid
98-33-9
- $10.00-30.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
-
- 2-Aminotoluene-5-sulfonic acid
98-33-9
- $1.10
- 99.00%
- Dideu Industries Group Limited
98-33-9(2-Aminotoluene-5-sulfonic acid)Related Search:
4-Amino-benzenesulfonic acid monosodium salt
p-Toluenesulfonic acid
Sodium p-toluenesulfonate
Sodium xylenesulfonate
Sulfamic acid
4-Amino-3-methylphenol
Nickel bis(sulphamidate)
SODIUM P-TOLUENESULFONATE
Ethyl 2-(Chlorosulfonyl)acetate
Sulfanilic acid
1of4
2-AMINOTOLUENE-5-SULFONIC ACID
4-AMINO-M-TOLUENESULFONIC ACID
6-AMINOTOLUENE-3-SULFONIC ACID
4-amino-3-methyl-benzenesulfonicaci
o-Toluidine-4-sulfphonicacid
3-methylsulphanilic acid
ORTHO TOLUIDINE META SULFO NIC ACID (OTMSA)
2-AMINOTOLUENE-5-SULFONIC ACID 97%
2-Amino-5-sulfotoluene
2-Methyl-4-sulfoaniline
4-Amino-3-methyl-1-sulfobenzene
3-Methyl-4-aminobenzene-1-sulfonic acid
o-Toluidine-4-sulfonic acid
4-Amino-3-methylbenzenesulphonic acid
2-Amino-5-sulphotoluene, 2-Methyl-4-sulphoaniline
Benzenesulfonic acid,4-amino-3-methyl-
o-Toluidine-4-sulfonic acid (NH2=1)
2 AMINO TOLUNE 5 SULPHONIC ACID
4-amino-3-methylbenzenesulfonate
2-Aminotoluene-5-sulfonic acid ISO 9001：2015 REACH
2-Aminotoluene-5-suofonic acid
2-Aminotoluene-5-sulfoni
TIANFU-CHEM 2-Aminotoluene-5-sulfonic acid 98-33-9
2-TOLUIDINE-5-SULFONIC ACID
6-Amino-m-toluensulfonic acid
4-Amino-3-methylbenzene-1-sulfonic acid
OT5SA (3-METHYLSULPHANILIC ACID)
Ortho Toluidine 5 Sulfonic Acid (OTS)/2-Aminotoluene-5-sulfonic acid
2-Methylaniline-4-sulfonamide
4-AMINO-3-METHYLBENZENESULFONIC ACID
OTS
98-33-9
C7H9O3SN
C7H8NO3S
Building Blocks
Organic Building Blocks
Sulfonic/Sulfinic Acids
Sulfur Compounds
Intermediates of Dyes and Pigments
