Introduction：Basic information about 2-Amino-4-chloro-5-methylbenzenesulfonic acid CAS 88-51-7, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
2-Amino-4-chloro-5-methylbenzenesulfonic acid Basic information
| Product Name: | 2-Amino-4-chloro-5-methylbenzenesulfonic acid |
| Synonyms: | 5-amino-4-chloro-2-methylbenzenesulfonic acid;Aminochlorotoluenesulfonicacid;2-CHLORO-4-AMINO TOLUENE-5-SULFONIC ACID;2B ACID;2-AMINO-4-CHLORO-5-METHYLBENZENESULFONIC ACID;2-CHLORO-PARATOLUIDINE-5-SULFONIC ACID;2-Chloro-4-Aminotoluene-5-Sulphonic Acid (2B Acid);2BAcid/4BAcid |
| CAS: | 88-51-7 |
| MF: | C7H8ClNO3S |
| MW: | 221.66 |
| EINECS: | 201-837-6 |
| Product Categories: | API Intermediate;Intermediates;Intermediates of Dyes and Pigments |
| Mol File: | 88-51-7.mol |
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2-Amino-4-chloro-5-methylbenzenesulfonic acid Chemical Properties
| Melting point | >300°C |
| Boiling point | 163°C (rough estimate) |
| density | 1.3031 (rough estimate) |
| vapor pressure | 0-0Pa at 25℃ |
| refractive index | 1.6210 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | Aqueous Acid (Slightly), DMSO (Slightly) |
| pka | -1.58±0.50(Predicted) |
| form | Solid |
| color | Off-White to Pale Red |
| LogP | -0.97--0.89 at 23℃ and pH2.6 |
| CAS DataBase Reference | 88-51-7(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 2-amino-4-chloro-5-methyl- (88-51-7) |
Safety Information
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36/37/39 |
| RIDADR | 3261 |
| RTECS | XT6330000 |
| TSCA | TSCA listed |
| HS Code | 2921.43.9020 |
| HazardClass | 8 |
| PackingGroup | III |
| Hazardous Substances Data | 88-51-7(Hazardous Substances Data) |
| Toxicity | LD50 oral in rat: 12300mg/kg |
2-Amino-4-chloro-5-methylbenzenesulfonic acid Usage And Synthesis
| Chemical Properties | White to buff powder. Essentially insoluble as free acid; soluble as sodium or ammonium salt. |
| Uses | 2-Amino-4-chloro-5-methylbenzenesulfonic Acid is used in method for preparing environment-friendly organic pigment for agricultural seed coating. |
| Uses | Intermediate for azo pigments. |
| Production Methods | The compound is made by baking 3-chloro-4-methyl-benzeneamine hydrogensulfate in vacuo at 195 ℃. |
| References | [1] Patent: KR2015/104064, 2015, A. Location in patent: Paragraph 0161-0165
[2] Patent: KR2016/92961, 2016, A. Location in patent: Paragraph 0151-0159
[3] Patent: DE175378,
[4] Patent: DE175378, |
2-Amino-4-chloro-5-methylbenzenesulfonic acid Preparation Products And Raw materials
| Raw materials | Sodium sulfide-->4-Nitrotoluene-->2-Chloro-4-nitrotoluene-->3-Chloro-4-methylaniline-->1,2-Dichlorobenzene-->Sulfuric acid |
| Preparation Products | Pigment Red 21-->Pigment Red 48:2-->Pigment Fast Dark Red BBM-->Pigment Red 48:1-->Pigment Red 48:3 |
