3,4-Dihydro-2H-pyran 110-87-2 [email protected]

Product Description 0.jpg Specifciation: 1.Competitive price 2.Fast Delivery Within 2 days 3.SGS , BV, GMP,ISO approve 4.Professional factory QQ20180531101300.png Product Name Tetrabutylammonium bromide CAS NO. 1643-19-2 Molecular Formula C16H36NBr Molecular Weight 322.37 Properties Assay 99% ,white solid, melting point 101-104℃ Easy deliquescence, soluble in water, alcohol, acetone, trichloromethane, slightly Functions 10.jpg 1. Ion pair reagents for the synthesis of baxacillin, sultamicillin, etc.; also an effective phase transfer catalyst. 2. Used for the manufacture of azo dyes, xanthene dyes, anthraquinone dyes, etc., as a developer, flax mordant, leather colorant. Can be made from tannic acid by heating and losing carbon dioxide Analysis 5.jpg Item Specifications Results Appearance White or light yellow crystals Conforms Assay 99.0% min 99.53% Water content <0.4% 0.27% Heavy metal (as As/Hg) <0.02% Not detected Item Specifications Results Appearance Colorless transparent liquid Conforms Assay 50% min 50.37% Assay 75% min 75.63%