Note: Ingredients listed on restricted chemical lists
EC/CAS
150-76-5
Name of the chemical
Mequinol
Concentration
>95
General Information
Version
5
Revision date
2025-12-22
Product name
4-Methoxyphenol
Product Synonyms
O-Methylhydroquinone; p-Hydroxyanisole; Monomethyl ether hydroquinone; MEHQ
CAS No.
150-76-5
Emergency telephone
1-800-234-7437, 001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific
GHS Information
Signal word
Warning
Section 2
SECTION 2: Hazards identification
WHMIS 2015 Classification
Signal word
Warning Hazard Statements May form combustible dust concentrations in air Harmful if swallowed May cause an allergic skin reaction Causes serious eye irritation
Prevention
Keep container tightly closed Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking Avoid breathing dust/fume/gas/mist/vapors/spray Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product Contaminated work clothing should not be allowed out of the workplace Wear protective gloves/protective clothing/eye protection/face protection
Response
In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell IF ON SKIN: Wash with plenty of soap and water IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing Rinse mouth If skin irritation or rash occurs: Get medical advice/attention If eye irritation persists: Get medical advice/attention Take off contaminated clothing and wash it before reuse
Storage
Store in a well-ventilated place. Keep container tightly closed
Disposal
Dispose of contents/container to an approved waste disposal plant
2.3 Other hazards
Harmful to aquatic life with long lasting effects
2.1 Classification of the substance or mixture
WHMIS 2015 Classification This product is hazardous in accordance with the Canada Hazardous Products Act (HPA) and Hazardous Products Regulation (HPR), as amended (SOR/2022-272) Acute oral toxicity Category 4 Serious Eye Damage/Eye Irritation Category 2 Skin Sensitization Category 1 Combustible Dusts