diaminostilbenedisulfonicacid
4,4'-Diamino-2,2'-stilbenedisulfonic acid
CAS: 81-11-8
Molecular Formula: C14H14N2O6S2
diaminostilbenedisulfonicacid - Names and Identifiers
| Name | 4,4'-Diamino-2,2'-stilbenedisulfonic acid |
| Synonyms | diaminostilbenedisulfonicacid 4,4-Diamino-2,2-stilbenedisulfonic acid 4,4'-Diamino-2,2'-stilbenedisulfonic acid 4,4-Diaminodiphenylethylene-2,2-disulfonic acid 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid |
| CAS | 81-11-8 |
| EINECS | 201-325-2 |
| InChI | InChI=1/C14H14N2O6S2/c15-11-5-3-9(13(7-11)23(17,18)19)1-2-10-4-6-12(16)8-14(10)24(20,21)22/h1-8H,15-16H2,(H,17,18,19)(H,20,21,22) |
diaminostilbenedisulfonicacid - Physico-chemical Properties
| Molecular Formula | C14H14N2O6S2 |
| Molar Mass | 370.40 |
| Density | 1.662g/cm3 |
| Melting Point | >325℃ |
| Water Solubility | <0.1 g/100 mL at 23℃ |
| Appearance | Form Crystalline Powder, color cream to yellow-brown |
| pKa | -1.58±0.50(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Stability | Stable. Combustible. Incompatible with iron, strong oxidizing agents. |
| Refractive Index | 1.726 |
| MDL | MFCD00024946 |
| Physical and Chemical Properties | Melting Point:>325 water-soluble:<0.1g/100 mL at 23 C Appearance: yellowish, fine needle-like
|
| Use | For the production of fluorescent whitening agents, direct Frozen Yellow G and direct yellow R, and used as pesticides |
diaminostilbenedisulfonicacid - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R34 - Causes burns |
| Safety Description | S22 - Do not breathe dust. 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2583 |
| RTECS | WJ6603000 |
| TSCA | Yes |
| HS Code | 29215900 |
diaminostilbenedisulfonicacid - Upstream Downstream Industry
diaminostilbenedisulfonicacid - Application
Open Data Verified Data
mainly used in the manufacture of fluorescent whitening agent, direct Frozen Yellow G, direct yellow R, sun-resistant orange F3 G and insect repellent.
Last Update：2025-08-19 16:24:40
diaminostilbenedisulfonicacid - Safety
Open Data Verified Data
- toxic, irritating to the skin. Should Avoid ingestion, avoid direct contact with the human body. Operators should wear labor protection equipment.
- the container is packed in a plastic bag lined with a barrel or an iron drum. 50kg per barrel. Storage in a cool, ventilated warehouse, sealed storage. Storage period of half a year. According to the provisions of the storage and transportation of toxic chemicals.
Last Update：2025-06-10 22:55:16
diaminostilbenedisulfonicacid - Nature
| Merck | 14,595 |
| BRN | 629516 |
| EPA chemical information | Amsonic acid (81-11-8) |
Last Update：2024-04-10 22:29:15
diaminostilbenedisulfonicacid - Production method
it is formed by sulfonation of p-nitrotoluene to p-nitrotoluene o-sulfonic acid, then catalytic oxidation to 4,4 '-dinitrostilbene disulfonic acid, and then reduction.
Last Update：2024-04-10 22:29:15
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View History
Raw Materials for diaminostilbenedisulfonicacid
Downstream Products for diaminostilbenedisulfonicacid
Fluorescent Brightener BC
Fluorescent brightener 85
fluorescent whitening agent PRS
Fluorescent Brightener VBU
FLUORESCENT BRIGHTENER 28
fluorescent bleaches BR
fluorescent whitening agent DMS
Direct Blending Yellow D-3RNL
Direct Blending Brilliant Red D-5BL
Reactive Yellow 84
Reactive Yellow KE-4RN
fluorescent bleaches R
Reactive Yellow KE-RN
Reactive Orange KE-2G
Fluorescent brightener 85
fluorescent whitening agent PRS
Fluorescent Brightener VBU
FLUORESCENT BRIGHTENER 28
fluorescent bleaches BR
fluorescent whitening agent DMS
Direct Blending Yellow D-3RNL
Direct Blending Brilliant Red D-5BL
Reactive Yellow 84
Reactive Yellow KE-4RN
fluorescent bleaches R
Reactive Yellow KE-RN
Reactive Orange KE-2G