C.I. Oxidation Base 18
5-Chloro-2-hydroxyaniline
CAS: 95-85-2
Molecular Formula: C6H6ClNO
C.I. Oxidation Base 18 - Names and Identifiers
| Name | 5-Chloro-2-hydroxyaniline |
| Synonyms | 4CAP c.i.76525 C.I. 76525 aminochlorophenol c.i.oxidationbase18 C.I. Oxidation Base 18 2-amino-4-chloro-pheno p-Chloro-o-Aminophenol 2-Amino-4-chlorophenol o-Amino-p-chlorophenol 4-chloro-2-Aminophenol 2-Hydroxy-5-chloroaniline 5-Chloro-2-hydroxyaniline 2-AMINO-4-CHLOROPHENOL FOR SYNTHESIS |
| CAS | 95-85-2 |
| EINECS | 202-458-9 |
| InChI | InChI=1/C6H6ClNO/c7-4-1-2-6(9)5(8)3-4/h1-3,9H,8H2 |
| InChIKey | SWFNPENEBHAHEB-UHFFFAOYSA-N |
C.I. Oxidation Base 18 - Physico-chemical Properties
| Molecular Formula | C6H6ClNO |
| Molar Mass | 143.57 |
| Density | 1.2028 (rough estimate) |
| Melting Point | 136-141°C(lit.) |
| Boling Point | 185.5°C (rough estimate) |
| Water Solubility | Insoluble. <0.1 g/100 mL at 20 ºC |
| Solubility | 2.3g/l |
| Appearance | Solid |
| Color | Pale Orange to Light Brown |
| BRN | 774859 |
| pKa | 9.31±0.18(Predicted) |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5618 (estimate) |
| Physical and Chemical Properties | Melting point 134°C water-soluble Insoluble. <0.1g/100 mL at 20°C |
| Use | For the preparation of acidic medium RH, acid complex Violet 5RN and reactive dyes, can also be used for the preparation of raw material chlorzoxazone |
C.I. Oxidation Base 18 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN 2673 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | SJ5700000 |
| TSCA | Yes |
| HS Code | 29222900 |
| Hazard Class | 6.1 |
| Packing Group | II |
C.I. Oxidation Base 18 - Reference Information
| Color index | 76525 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| (IARC) carcinogen classification | 2B (Vol. 123) 2020 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | an intermediate of chlorzoxazone. for the preparation of acidic media RH, acid complex Violet 5RN and reactive dyes, can also be used for the preparation of raw material medicine chlorzoxazone |
| production method | O-nitrop-chlorophenol can be obtained by reduction. It can also be prepared by condensation of p-chlorophenol with diazobenzene into 2-hydroxy-5-chloroazobenzene, followed by reduction. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 690 mg/kg; Oral-mouse LD50: 1030 mg/kg |
| flammability hazard characteristics | open flame flammable; High heat releases toxic chloride and nitrogen oxide gases |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from food additives and oxidants |
| fire extinguishing agent | water, foam, carbon dioxide, sand |
Last Update：2024-04-09 20:52:54
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