Supply Pinacol Vinylboronate in China CAS NO.75927-49-0

pinacol vinylboronate[cas:75927-49-0]

mfg.date: apr., 2010 exp. date: apr., 2012

quantity: 10 kgs

item standard result

appearance: white to almost white powder complies

identification:

ir spectrum: complies with that of the srandard complies

discrimination chloride: forward reaction complies

appearance solution: clear and colorless complies

loss on drying: 0.5%max. complies

clarity of solution: clarity and colourless complies

ph(acid): 4.0~6.5 5.6

loss on drying: 0.5%max. 0.06%

average particle size: 100 micron:80%&100~120 micron:20% complies

sulphated ash: 0.1%max. 0.08%

impurity e(tlc): 0.5%max. complies

relatedsubstances(hplc):

impurity a: 0.5%max. 0.02%

impurity b: 0.5%max. 0.01%

impurity c: 0.2%max. 0.08%

impurity d: 0.1%max. 0.01%

any other impurity: 0.1%max. 0.01%

total impurity: 1.0%max. 0.14%

assay(hplc): 97.0%-102.0%(dried basis) 99.86%

conclusion: it complies with ep standard.

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