potassium sulphate

para-base-ester para base ester manufacturer Project Description Synonyms: 2-(4-aminophenyl)sulfonyl ethyl hydrogen sulfate PRODUCT DETAILS CAS: 2494-89-5 EINECS:219-669-7 Molecular Formula:  C 8 H 11 O 6 NS 2 Molecular Weight: 281.306 Material Safety Data Sheet: Contact us for safety data sheet As the main material of producing reactive dyes, para base ester is used in the synthesis of vinyl sulfone reactive dyestuff.Para base ester is the most important intermediate to vinyl sulfone reactive dyestuff. In the last years, proportion of reactive dyestuff containing vinyl sulfone production is rising, and it has become the largest output reactive dyestuff in the world. Quality standard Grade Excellent grade Premium grade Amino Value% ≥ 97.0 96.0 Purity% ≥ 96 95 undissolved substance mass fraction% ≤ 0.05 0.30 p-Chloroaniline mass fraction mg/kg ≤ 300 500 fineness （ Residue of standard sieve through aperture of 180 microns ） % ≤ 2.0 5.0

potassium sulphate supplier  Project Description Synonyms: Sulfurous acid anhydride PRODUCT DETAILS CAS: 7446-09-5 EINECS:231-195-2 Molecular Formula: SO 2 Molecular Weight: 64.0638 Material Safety Data Sheet: Contact us for safety data sheet potassium sulphate supplier Item（liquid SO2） Standard(GB/T3637-2011) Excellent grade Premium grade First grade appearance Colorless liquid Sulfur dioxide（SO2）,%≥ 99.97 99.90 99.60 residue，%         ≤ 0.010 0.040 0.20 water，%         ≤ 0.020 0.060 0.20 Application: It is used to manufacture inorganic sulfide and organic syntheses. Also it is used as pesticide and food preservative agent.