ChemicalBook >> CAS DataBase List >>2-Amino-3,6,8-naphthalenetrisulfonic acid
2-Amino-3,6,8-naphthalenetrisulfonic acid
- CAS No.
- 118-03-6
- Chemical Name:
- 2-Amino-3,6,8-naphthalenetrisulfonic acid
- Synonyms
- K-ACID;AMINO K ACID;2-R amino acid;kyselinakochova;Amino K Acid(K Acid);2-NAPHTHYLAMINE-3,6,8-TRISULFONIC ACID;6-naphthalenetrisulfonicacid,7-amino-3;7-Amino-1,3,6-naphthalenesulfonic Acid;2-NAPTHYLAMINE-3,6,8 TRI SULPHONIC ACID;kyselina2-naftylamin-3,6,8-trisulfonova
- CBNumber:
- CB1148862
- Molecular Formula:
- C10H9NO9S3
- Molecular Weight:
- 383.37
- MDL Number:
- MFCD00035721
- MOL File:
- 118-03-6.mol
- MSDS File:
- SDS
Last updated:2026-05-27 23:09:25
| Product description | Number | Pack Size | Price |
| 2-Naphthylamine-3,6,8-trisulfonic acid | FN41107 | 0.5kg | $383.5 |
| 2-Naphthylamine-3,6,8-trisulfonic acid | FN41107 | 1kg | $590 |
| 2-Naphthylamine-3,6,8-trisulfonic acid | FN41107 | 2kg | $826 |
| 2-Naphthylamine-3,6,8-trisulfonic acid | FN41107 | 5kg | $1416 |
| 7-Aminonaphthalene-1,3,6-trisulfonic acid 95+% | CD44000715 | 5g | $200 |
| More product size | |||
| Boiling point | 702.53℃[at 101 325 Pa] |
|---|---|
| Density | 1.7995 (rough estimate) |
| refractive index | 1.6800 (estimate) |
| storage temp. | 2-8°C |
| pka | -1.27±0.40(Predicted) |
| Water Solubility | 1000g/L at 25℃ |
| InChI | InChI=1S/C10H9NO9S3/c11-8-4-7-5(2-10(8)23(18,19)20)1-6(21(12,13)14)3-9(7)22(15,16)17/h1-4H,11H2,(H,12,13,14)(H,15,16,17)(H,18,19,20) |
| InChIKey | GFPQSWFFPRQEHH-UHFFFAOYSA-N |
| SMILES | C1(S(O)(=O)=O)=C2C(C=C(S(O)(=O)=O)C(N)=C2)=CC(S(O)(=O)=O)=C1 |
| LogP | -11.96 |
| CAS DataBase Reference | 118-03-6(CAS DataBase Reference) |
| EPA Substance Registry System | 1,3,6-Naphthalenetrisulfonic acid, 7-amino- (118-03-6) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| TSCA | TSCA listed |
| Toxicity | rat,LD50,oral,13gm/kg (13000mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1058, 1986. |
| REACH Registrations | Active |
2-Amino-3,6,8-naphthalenetrisulfonic acid price More Price(23)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Biosynth | FN41107 | 2-Naphthylamine-3,6,8-trisulfonic acid | 118-03-6 | 0.5kg | $383.5 | 2026-06-04 | Buy |
| Biosynth | FN41107 | 2-Naphthylamine-3,6,8-trisulfonic acid | 118-03-6 | 1kg | $590 | 2026-06-04 | Buy |
| Biosynth | FN41107 | 2-Naphthylamine-3,6,8-trisulfonic acid | 118-03-6 | 2kg | $826 | 2026-06-04 | Buy |
| Biosynth | FN41107 | 2-Naphthylamine-3,6,8-trisulfonic acid | 118-03-6 | 5kg | $1416 | 2026-06-04 | Buy |
| Crysdot | CD44000715 | 7-Aminonaphthalene-1,3,6-trisulfonic acid 95+% | 118-03-6 | 5g | $200 | 2026-05-27 | Buy |
2-Amino-3,6,8-naphthalenetrisulfonic acid Chemical Properties,Uses,Production
Chemical Properties
2-Aminonaphthalene-3,6,8-trisulfonic acid [118-03-6]. (7-aminonaphthalene-1,3,6- trisulfonic acid), C10H9NO9S3, Mr 383.36, and its disodium salts are soluble in water, but the dipotassium salt is much less soluble. Reduction with zinc dust and alkali results in 2-aminonaphthalene-3,6-disulfonic acid, and caustic fusion at 240℃ gives 2-amino-8-hydroxynaphthalene-3,6-disulfonic acid.
Production Methods
2-Aminonaphthalene-6,8-disulfonic acid is sulfonated with 65 % oleum at 125℃ for 12 h in the presence of anhydrous sodium sulfate. After quenching and liming out, the hot solution of calcium salt is basified with sodium carbonate and the resulting solution of the trisodium salt is used directly for caustic fusion to give 2-amino-8-hydroxynaphthalene-3,6-disulfonic acid.
Flammability and Explosibility
Not classified
References
[1] Patent: CN106866467, 2017, A. Location in patent: Paragraph 0025; 0029; 0033; 0037
2-Amino-3,6,8-naphthalenetrisulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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Global( 240)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 | niki@zlchemi.com | China | 7245 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21585 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29812 | 58 |
| Nanjing Dolon Biotechnology Co.,Ltd. | 18905173768 | 52513593@qq.com | CHINA | 2972 | 58 |
| 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 | sales@conier.com | China | 49979 | 58 | |
| Neostar United (Changzhou) Industrial Co., Ltd. | +86-0519-85551759 | marketing1@neostarunited.com | China | 8828 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17346 | 58 |
| Hubei Ipure Biology Co., Ltd | +8618062405514 | ada@ipurechemical.com | China | 10236 | 58 |
View Lastest Price from 2-Amino-3,6,8-naphthalenetrisulfonic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-07-30 | 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
|
1kg | 99%min | 20tons | HANGZHOU HAILAN CHEMICAL CO.,LTD. | ||
 |
2026-07-30 | 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
|
1KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2025-11-18 | 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
|
$1.10 | 1g | 99.00% | 100 Tons Min | Dideu Industries Group Limited |
-
- 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
- $0.00
- 99%min
- HANGZHOU HAILAN CHEMICAL CO.,LTD.
-
- 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- 2-Amino-3,6,8-naphthalenetrisulfonic acid
118-03-6
- $1.10
- 99.00%
- Dideu Industries Group Limited
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2-Amino-3,6,8-naphthalenetrisulfonic acid ISO 9001：2015 REACH
1-amino-8-naphthol-4,6-disulfonic acid ( K acid )
7-aminonaphthalene-1,3,6-trisulphonic acid CAS NO.118-03-6
K acid/2-Naphthylamine-3,6,8-Trisulfonic acid
2 mino-3,6,8-naphthalenetrisulfonic acid
2-Naphthylamine-3,6,8-trisulfonicacid(Kacid)
K-ACID
2-Amino-3,6,8-naphthalenetrisulfonic acid
Amino K Acid(K Acid)
2-Amino-3,6,8-naphthalenetrisulfonic acid(K acid)
K-ACID
118-03-6
NH2C10H4SO3H3
C10H9O9NS3
C10H9NO9S3
Intermediates of Dyes and Pigments
Organic acids
