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3,5-Dimethylphenol

3,5-Dimethylphenol

CAS: 108-68-9

Molecular Formula: C8H10O

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3,5-Dimethylphenol - 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

3,5-Dimethylphenol - Physico-chemical Properties

Molecular FormulaC8H10O
Molar Mass122.16
Density1.115
Melting Point61-64°C(lit.)
Boling Point222°C(lit.)
Flash Point109 °C
Water Solubility5.3 g/L (25 ºC)
Vapor Presure5-5.4Pa at 25℃
AppearanceCrystalline Solid
ColorWhite to orange
Exposure LimitACGIH: TWA 1 ppm
Merck14,10082
BRN774117
pKapK1:10.15 (25°C)
Storage Conditionroom temp
SensitiveAir & Light Sensitive
Refractive Index1.5146 (estimate)
Physical and Chemical PropertiesCharacter: White needle crystal.
melting point 68 ℃
boiling point 219.5 ℃
relative density 0.9680
soluble in water and ethanol.
UseFor the preparation of phenolic resin, medicine, pesticides, dyes and explosives

3,5-Dimethylphenol - Risk and Safety

Hazard SymbolsT - Toxic
Toxic
Risk CodesR24/25 -
R34 - Causes burns
Safety DescriptionS26 - 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 IDsUN 2261 6.1/PG 2
WGK Germany2
RTECSZE6475000
TSCAYes
HS Code29071400
Hazard Class6.1
Packing GroupII

3,5-Dimethylphenol - Reference Information

LogP2.35 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
3,5-Dimethylphenol
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3,5-Dimethylphenol
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