JACS-98-44-2
2-Amino-1,4-benzenedisulfonic acid
CAS: 98-44-2
Molecular Formula: C6H7NO6S2
JACS-98-44-2 - Names and Identifiers
| Name | 2-Amino-1,4-benzenedisulfonic acid |
| Synonyms | JACS-98-44-2 2,5-disulfonic Aniline-2,5-disulfonic acid 2-Amino-p-benzenedislfonicacid kyselinaanilin-2,5-disulfonova 2-aminobenzene-1,4-disulfonate 2-amino-p-benzenedisulfonicaci 4-Benzenedisulfonicacid,2-amino-1 2-amino-benzene-1,4-disulfonicacid 2-aminobenzene-1,4-disulfonic acid 2-Amino-1,4-benzenedisulfonic acid 2-aminobenzene-1,4-disulphonic acid 1,4-Benzenedisulfonic acid, 2-amino- |
| CAS | 98-44-2 |
| EINECS | 202-669-6 |
| InChI | InChI=1/C6H7NO6S2/c7-5-3-4(14(8,9)10)1-2-6(5)15(11,12)13/h1-3H,7H2,(H,8,9,10)(H,11,12,13)/p-2 |
JACS-98-44-2 - Physico-chemical Properties
| Molecular Formula | C6H7NO6S2 |
| Molar Mass | 253.25 |
| Density | 1.569 (estimate) |
| Melting Point | >300°C |
| Boling Point | 497.5℃[at 101 325 Pa] |
| Water Solubility | Slightly soluble in water. |
| Solubility | Aqueous Acid (Slightly), Water (Slightly) |
| Appearance | Solid |
| Color | White to Off-White |
| pKa | -1.15±0.50(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Refractive Index | 1.5500 (estimate) |
| Physical and Chemical Properties | yellow crystal. |
| Use | Used as dye intermediates, mainly used in the manufacture of direct sun-resistant blue RGL, reactive green blue KGL, reactive yellow and active Orange, etc |
JACS-98-44-2 - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R43 - May cause sensitization by skin contact |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
| RTECS | CZ9250000 |
| TSCA | Yes |
JACS-98-44-2 - Nature
Open Data Verified Data
yellow crystals, soluble in water and ethanol, swallowed toxic.
Last Update：2024-01-02 23:10:35
JACS-98-44-2 - Preparation Method
Open Data Verified Data
M-aminobenzenesulfonic acid was sulfonated with fuming sulfuric acid, cooled, diluted with water, heated (95 ° C.), activated carbon was added, stirred and filtered, and the filtrate was salted out with salt.
Last Update：2022-01-01 10:55:42
JACS-98-44-2 - Application
Open Data Verified Data
dye intermediates, mainly used in the manufacture of direct sun-resistant blue RGL, reactive green blue KGL, reactive yellow and active Orange.
Last Update：2025-08-19 16:24:40
JACS-98-44-2 - Safety
Open Data Verified Data
- toxic, irritating to the skin, the operation should pay attention to avoid sucking or swallowing. Operators should wear protective equipment to avoid staining the skin. Rat oral LD50 7760mg/kg.
- the container is packed in a barrel lined with plastic bags. 50kg per barrel. Store in a cool, ventilated, dry place, heat, fire, moisture. According to the provisions of the storage and transportation of toxic chemicals.
Last Update：2022-01-01 10:55:42
JACS-98-44-2 - Reference Information
| LogP | -3.43 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| purpose | used as dye intermediate, mainly used in the manufacture of direct sun-resistant blue RGL, reactive green blue KGL, active yellow and active Orange, etc. |
| production method | M-aminobenzenesulfonic acid is sulfonated with fuming sulfuric acid, then cooled, diluted with water, heated, activated carbon is added and stirred at 95 ℃ to decolorize, after filtration, the filtrate was salted out with salt. Raw material consumption quota: M-aminobenzene sulfonic acid (industrial) 715kg/t, fuming sulfuric acid (SO 320%)2810kg/t, refined salt (industrial) 1273kg/t, activated carbon 22kg/t. |
| category | toxic substances |
| stimulation data | Skin-rabbits 500 mg/24 h mild; eye-rabbit 100 mg/24 h moderate |
| flammability hazard characteristics | flammability; Toxic nitrogen oxide and sulfur oxide fumes from combustion |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
Last Update：2024-04-09 20:52:54
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