免费无码又爽又黄又刺激网站|少妇精品久久久久久久久久|26uuu在线亚洲欧美|欧美日韩亚洲综合一区,婷婷五月天综合在线视频,国产高清特黄无遮挡大片,亚洲大尺度无码AV专区

Catalyst series     more > 4-Dimethylaminopyridine Tetrabutylammonium bromide Tetraethylammonium bromide Amino acid series more > L-tyrosine L-leucine L-threonine Other products    more > 4-Methoxyphenol (MEHQ) 4-tert-Butylcatechol (TBC) Phenothiazine

Product name: 4-Methoxyphenol Molecular formula : C7H8O2 CAS NO. : 150-76-5 Molecular weight: 124.14 Quality Index : Appearance white crystal Melting point 54.0～56.5℃ Assay≥ 99.5％ hydroquinone≤ 0.05％ Loss on drying ≤ 0.3％ Residue on Ignition ≤ 0.01％ Heavy metals≤ 0.001％ Chroma (APHA) ≤ 10# Uses: This product is mainly used for the production and shipping of acrylonitrile, acrylic acid and its ester, methacrylic acid and its ester and alkenyl monomer as polymerization inhibitor; It is also used in the synthesis of protective agent, plasticizer, food antioxidant Order >>   Back >>