4-Methoxyphenol(150-76-5)
Product Identification
Product Name
4-Methoxyphenol
Synonyms
Hydroxyquinone, monomethyl ether
Mequinol
p-Hydroxyanisole
p-Methoxyphenol
CAS
150-76-5
Formula
C7H8O2
Molecular Weight
124.14
EINECS
205-769-8
RTECS
SL7700000
RTECS Class
Mutagen; Primary Irritant
Beilstein/Gmelin
507924
Beilstein Reference
4-06-00-05717
EC Index Number
604-044-00-7
EC Class
Harmful; Irritant; Sensitising
Physical and Chemical Properties
Appearance
White to off-white waxy solid or flaky, crystalline material. Odor of caramel and phenol.
Solubility in water
40 g/L
Melting Point
55 - 57
Boiling Point
243
Vapor Pressure
0.02 (25 C)
Density
1.55 g/cm3 (20 C)
pKa/pKb
10.40 (pKa)
Partition Coefficient
1.58
Heat Of Vaporization
49.9 kJ/mol
Usage
Manufacture of antioxidants, pharmaceuticals, plasticizers, dyestuffs, uv inhibitor, stabilizer for chlorinated hydrocarbons & ethyl cellulose, inhibitor for acrylic monomers & acrylonitriles.
Vapor Density
4.2
Saturation Concentration
<13 ppm at 25 C (calculated)
First Aid Measures
Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Hazards Identification
Inhalation
May cause respiratory tract irritation.
Skin
Causes skin irritation. May cause depigmentation of the skin.
Eyes
Causes eye irritation. May cause eye burns.
Ingestion
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May be harmful if swallowed.
Hazards
Combustible
EC Risk Phrase
R 22 36 43
EC Safety Phrase
S 24/25 26 37/39 46
UN (DOT)
3335
Exposure Controls/Personal Protection
Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Exposure Effects
Chronic exposure may cause visual disturbances. Prolonged contact may cause severe eye irritation or burns.
Exposure limit(s)
NIOSH REL: TWA 5 mg/m3
Poison Class
4
Fire Fighting Measures
Flash Point
121
Autoignition
445
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Upper exp. limit
9.6
Lower exp. limit
1.3
Fire Potential
Combustible.
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