Introduction of p-Hydroxyanisole (MEHQ,4-Methoxyphenol) CAS 150-76-5
It is mainly used as an inhibitor for the production of vinyl monomers such as acrylonitrile, acrylic acid and its esters, and methacrylic acid and its esters. Its biggest advantage is that when used, it does not require the removal of p-hydroxybenzyl ether. It can directly participate in polymerization and is also used as an anti-aging agent, plasticizer, and food additive (BHA) in the synthesis.
Molecular formula: C7H8O2 2.
Molecular weight: 124.14
Appearance: White crystalline flakes, soluble in alcohols, benzene, and ethers.
Boiling point: 243 ℃
Quality standards
Appearance: White crystals
Melting point, ℃: 54.0-56.5
Hydroquinone,%: ≤0.05
Loss on drying,%: ≤0.3
Burning residue,% ≤0.01Heavy metals (in Pb)% ≤0.001
Dimethyl hydroquinone ether: Not detectable
Chromaticity (APHA): 10
Packing and Storage
The packaging adopts iron drum packaging, with 7 kilograms x 6 bags/iron drumWhen storing and transporting products, the barrel lid should be sealed to prevent collision, sun exposure, rain, keep away from heat sources, and isolate fire sources.
Store in a dry, clean, cool, and ventilated warehouse.
The shelf life is one year from the date of production, and it can still be used after being stored and retested as qualified.
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