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- Chemical Name: Sulfanilic acid
- CAS No.: 121-57-3
- Molecular Fomula: C6H7NO3S
- Molecular weight：173.19
- Appearance:White crystals
- Sample：Available
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Description of ANHYDROUS
- Sulfanilic acid (4-aminobenzenesulfonic acid ) is an off-white crystalline solid which finds application in quantitative analysis of nitrate and nitrite ions. The solid acid exists as a zwitterion, and has an unusually high melting point.
Basic Info of ANHYDROUS
Basic Info
Numbering system
Properties
Safety Info
Basic Info
| Chemical Name | 4-aminobenzenesulfonic acid |
| Synonyms | Sulfanilic Acid;4-Aminobenzenesulfonic acid,Aniline-4-sulfonic acid;4-Aminobenzenesulfonic acid,Aniline-4-sulfonic acid,Sulfanilic acid;4-Aminobenzenesulfonic acid,Sulfanilic acid;4-Aminobenzenesulfonic acid;Expand |
| CAS No. | 121-57-3 |
| Molecular Formula | C6H7NO3S |
| Molecular Weight | 173.19000 |
| PSA | 88.77000 |
| LogP | 2.17750 |
Numbering system
| BRN number | 908765 |
| EINECS number | 204-482-5 |
| MDL number | MFCD00007886 |
| RTECS number | WP3895500 |
Properties
| Appearance & Physical State | light grey powder |
| Density | 1.485 |
| Boiling Point | 500ºC |
| Melting Point | 288ºC (dec) |
| Water Solubility | 0.1 g/100 mL (20 ºC) |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Storage Condition | Store in dark |
Safety Info
| RTECS | WP3895500 |
| Safety Statements | S24-S37 |
| HS Code | 2921420090 |
| WGK Germany | 1 |
| RIDADR | UN 2790 8/PG 3 |
| Risk Statements | R36/38; R43 |
| Hazard Codes | Xi |
| Symbol | GHS07 |
| Signal Word | Warning |
| Caution Statement | P280; P305 + P351 + P338 |
| Hazard Declaration | H315; H317; H319 |
What is Sulfanilic acid?
- With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Sulfanilic acid which has developed particularly rapidly in recent years. Do you know about Sulfanilic acid?
- The official answer：White or off-white crystals. Hydrate loses water at 100°C. Anhydrous matter begins to decompose and carbonize at 280°C. Relative density 1.485 (25/4). Slightly soluble in cold water, insoluble in ethanol, ether, and benzene, remarkably acidic, soluble in caustic soda solution and sodium carbonate solution.
What’s the application of Sulfanilic acid?
- Used in the manufacture of azo dyes, etc. Also used as a pesticide for the prevention and control of wheat rust. Iodides and nitrites. It is also used as an elemental standard for the analysis of carbon, hydrogen, nitrogen, oxygen, and sulfur, for the determination of nitrite in conjunction with 1-naphthylamine, for the determination of osmium and ruthenium, for the indirect determination of potassium through potassium nitrite, for the determination of serum bilirubin and for soil analysis.
Conclusion
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