C.I. Solvent Yellow 2 (8CI)
Methyl Yellow
CAS: 60-11-7
Molecular Formula: C14H15N3
C.I. Solvent Yellow 2 (8CI) - Names and Identifiers
C.I. Solvent Yellow 2 (8CI) - Physico-chemical Properties
| Molecular Formula | C14H15N3 |
| Molar Mass | 225.29 |
| Density | 1.1303 (rough estimate) |
| Melting Point | 111°C (dec.)(lit.) |
| Boling Point | 356.8°C (rough estimate) |
| Flash Point | 178.205°C |
| Water Solubility | 13.6 mg/L |
| Solubility | Solubility Insoluble in water; soluble in ethanol, benzene, ether, chloroform,petroleum ether, mineralacids, oils |
| Vapor Presure | 3 x 10-7 mmHg (estimated, NIOSH, 1997) |
| Appearance | Yellow to or orange crystals |
| Color | Yellow |
| Maximum wavelength(λmax) | ['408nm, 256nm, 508nm'] |
| Merck | 14,3229 |
| BRN | 746016 |
| pKa | 3.226(at 25℃) |
| PH | 2.9-4.0 |
| Storage Condition | Store at RT. |
| Stability | Stable, but heat and light sensitive. Incompatible with strong oxidizing agents, strong acids. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.5770 (estimate) |
| MDL | MFCD00008308 |
| Physical and Chemical Properties | Golden yellow flakes or powder. Melting point 114-117 °c. Soluble in alcohol, ether, chloroform, benzene, petroleum ether and inorganic acid, insoluble in water. |
| Use | Used as acid-base indicator, indicator for non-aqueous titration and determination of Free hydrochloric acid in gastric juice |
C.I. Solvent Yellow 2 (8CI) - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R25 - Toxic if swallowed R40 - Limited evidence of a carcinogenic effect R68 - Possible risk of irreversible effects R45 - May cause cancer R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. S22 - Do not breathe dust. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | BX7350000 |
| TSCA | Yes |
| HS Code | 29270000 |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | Acute oral LD50 for mice 300 mg/kg, rats 200 mg/kg (quoted, RTECS, 1985). |
C.I. Solvent Yellow 2 (8CI) - Reference
| Reference Show more | 1. Chen Lin, Wen, Jia Xin, Liu Xiaoxiao et al. Rapid detection of 12 kinds of yellow pigments adulterated in chuanshanjia by HPLC combined with LC-MS/MS [J]. Chinese patent medicine 2017 03(v.39):118-122. |
C.I. Solvent Yellow 2 (8CI) - Introduction
Can be alcohol in alcohol, benzene, chloroform, ether, petroleum ether and mineral acid, insoluble in water.
Last Update：2022-10-16 17:26:54
C.I. Solvent Yellow 2 (8CI) - Reference Information
| Color index | 11020 |
| pH range of acid-base indicator color change | 2.9(red)-4(yellow/orange) |
| Main application | electrochemical materials, sol-gel coatings, display device, inks, gasdetection apparatus, nematocides, hair dyes, diapers, food storage, status assessment Innovation cancer, detecting cardiology, bacteria, diagnosis cervical disease, Earth dressing materials |
| (IARC) carcinogen classification | 2B (Vol. 8, Sup 7) 1987 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| purpose | This product is an acid-base indicator. PH 2.9 (red)-4.0 (yellow). Indicator for non-aqueous titration and determination of Free hydrochloric acid in gastric juice. used as acid-base indicator, indicator for non-aqueous titration and determination of Free hydrochloric acid in gastric juice |
| production method | is obtained by diazotization of aniline with sodium nitrite and coupling with dimethylaniline. Aniline was slowly added to concentrated hydrochloric acid with crushed ice, and sodium nitrite solution was added at 0-5 °c for diazotization. Dimethyl aniline is added to the diazonium salt, the temperature is controlled below 5 ℃, and industrial sodium acetate is added while stirring. After stirring for 3H, a small amount of sodium acetate is added, and yellow precipitate is filtered to obtain crude product. After drying, it is recrystallized with toluene and then recrystallized with ethanol to obtain dimethyl yellow. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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