M-XYLENOL
3,5-Dimethylphenol
CAS: 108-68-9
Molecular Formula: C8H10O
M-XYLENOL - Names and Identifiers
| Name | 3,5-Dimethylphenol |
| Synonyms | MX M-XYLENOL 3,5-XYLENOL 3,5-Xylenol SYM-M-XYLENOL 5-HYDROXY-M-XYLENE 3,5-Dimethylphenol 3,5-DIMETHYLPHENOL 3,5-dimethyl phenol DIMETHYLPHENOL(3,5-) 1-HYDROXY-3,5-DIMETHYLBENZENE 5-HYDROXY-1,3-DIMETHYLBENZENE |
| CAS | 108-68-9 |
| EINECS | 203-606-5 |
| InChI | InChI:1S/C8H10O/c1-6-3-7(2)5-8(9)4-6/h3-5,9H,1-2H3 |
| InChIKey | TUAMRELNJMMDMT-UHFFFAOYSA-N |
M-XYLENOL - Physico-chemical Properties
| Molecular Formula | C8H10O |
| Molar Mass | 122.16 |
| Density | 1.115 |
| Melting Point | 61-64°C(lit.) |
| Boling Point | 222°C(lit.) |
| Flash Point | 109 °C |
| Water Solubility | 5.3 g/L (25 ºC) |
| Vapor Presure | 5-5.4Pa at 25℃ |
| Appearance | Crystalline Solid |
| Color | White to orange |
| Exposure Limit | ACGIH: TWA 1 ppm |
| Merck | 14,10082 |
| BRN | 774117 |
| pKa | pK1:10.15 (25°C) |
| Storage Condition | room temp |
| Sensitive | Air & Light Sensitive |
| Refractive Index | 1.5146 (estimate) |
| Physical and Chemical Properties | Character: White needle crystal. melting point 68 ℃ boiling point 219.5 ℃ relative density 0.9680 soluble in water and ethanol. |
| Use | For the preparation of phenolic resin, medicine, pesticides, dyes and explosives |
M-XYLENOL - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R24/25 - R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. 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.) S28A - |
| UN IDs | UN 2261 6.1/PG 2 |
| WGK Germany | 2 |
| RTECS | ZE6475000 |
| TSCA | Yes |
| HS Code | 29071400 |
| Hazard Class | 6.1 |
| Packing Group | II |
M-XYLENOL - Reference Information
| LogP | 2.35 at 25.5℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for the manufacture of phenolic resins, pharmaceuticals, pesticides, dyes and explosives 3, 5-xylenol is an intermediate for preparing carbamate insecticides, and can also be used in the production of rubber accelerators, anti-aging agents, drugs, fragrances, phenolic resins, etc., and also used as an additive for cold rolling oil, the service life of cold rolling oil can be prolonged. used in the production of pesticides, rubber accelerators, antioxidants, drugs, spices, phenolic resins, etc. It is also used as an additive for cold rolling oil, which can prolong the service life of cold rolling oil. |
| production method | mixed xylenol distillation, collecting 218-222 ℃ fraction, cooling crystallization, centrifugal separation to obtain industrial grade 3,5-dimethyl phenol. After recrystallization with toluene, a final product with a purity of 98% can be obtained. M-xylene was sulfonated with concentrated sulfuric acid at 185 ° C., neutralized at 60-90 ° C., alkali melted at about 350 ° C., acidified with sulfuric acid, and finally distilled under reduced pressure to obtain 3, 5-xylenol with a yield of 65%. The mixed xylenol was fractionated, and the 218-222 ° C. Fraction was collected, cooled, crystallized and centrifuged to obtain industrial grade 3, 5-xylenol. After recrystallization with toluene, a final product with a purity of 98% can be obtained. The M-Xylene is sulfonated with concentrated sulfuric acid at 185 ℃, neutralized at 60~90 ℃, alkali melted at about 350 ℃, acidified by sulfuric acid, and finally distilled under reduced pressure to obtain 3, 5-dimethylphenol, the yield was 65%. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 608 mg/kg; Oral-mouse LD50: 477 mg/kg |
| stimulation data | eye-rabbit 0.25 mg severe |
| flammability hazard characteristics | flammability; Toxic chloride fumes from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature, separate storage and transportation of oxidant |
| fire extinguishing agent | carbon dioxide, sand, foam, dry powder |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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View History
M-XYLENOL
4-methoxybenzenecarbothioamide
butyl 4-hydroxybenzoate sodium salt
Benzil Dimethyl Ketone
DL-Homocysteine
罗沙前列醇
4-methoxybenzenecarbothioamide
butyl 4-hydroxybenzoate sodium salt
Benzil Dimethyl Ketone
DL-Homocysteine
罗沙前列醇