K Acid
7-aminonaphthalene-1,3,6-trisulphonic acid
CAS: 118-03-6
Molecular Formula: C10H9NO9S3
K Acid - Names and Identifiers
| Name | 7-aminonaphthalene-1,3,6-trisulphonic acid |
| Synonyms | K-ACID K Acid AMINO K ACID kyselinakochova 2-Napthylamine-3,6,8-Trisulfonic Acid 2-NAPHTHYLAMINE-3,6,8-TRISULFONIC ACID 2-Naphthylamine-3,6,8-trisulfonic acid 2-Amino-3,6,8-naphthalenetrisulfonic acid 7-AMINO-1,3,6-NAPHTHALENETRISULFONIC ACID 7-aminonaphthalene-1,3,6-trisulfonic acid 2-Amino-3,6,8-Naphthalenetrisulfonic Acid 7-aminonaphthalene-1,3,6-trisulphonic acid 7-Aminonaphthalene-1,3,6-trisulphonic acid |
| CAS | 118-03-6 |
| EINECS | 204-229-9 |
| InChI | InChI=1/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) |
K Acid - Physico-chemical Properties
| Molecular Formula | C10H9NO9S3 |
| Molar Mass | 383.37 |
| Density | 1.7995 (rough estimate) |
| Melting Point | 140-143 ℃(lit.) |
| Boling Point | 702.53℃[at 101 325 Pa] |
| Water Solubility | 1000g/L at 25℃ |
| pKa | -1.27±0.40(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.6800 (estimate) |
| Physical and Chemical Properties | Appearance as colorless or brown powder. Mainly used for the preparation of azo reactive dyes, acid dyes and organic pigments. |
| Use | For the manufacture of azo dyes and 2R acids |
K Acid - Upstream Downstream Industry
| Raw Materials | 2-Naphthol Ammonium hydroxide Sulfuric acid |
K Acid - Reference Information
| LogP | -11.96 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used to make azo dyes and 2R acids |
| category | toxic substances |
| toxicity classification | low toxicity |
| acute toxicity | oral-rat LD50: 13000 mg/kg |
| stimulation data | skin-rabbit 500 mg/24 hours mild; Eyes-rabbit 500 mg/24 hours mild |
| flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxides and sulfur oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
Last Update：2024-04-10 22:29:15
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Raw Materials for K Acid