USD $8.20-8.80 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
character: it is white,silkete squama or acercse crystal. it has aslightle smell of benzoin of benzaldehyde. it sublimates at about 100°c,relative density is 1.316,boiliy point is 249.2°c, melting point is 121.7°c-123°c. it is difficult to dissolve water(0.34g/100ml,25°c), it can dissolve boiling water(4.55g/100ml,90°c)ethand, chloroform and ether, fixed oil and naphtha.
spec and executive standard:
industrial class:q/tlhg001-2003
food class:gb1902-94
medical class:chinese pharmacopoeia gb95
english pharmacopoeia bp93.bp98
america pharmacopoeia usp24,fcc4.
items |
specification |
appearance |
white crystalline powder |
content % |
≥99.50% |
colour of solution |
accord with b9 |
meltion point |
121-124℃ |
loss on drying% |
≤0.5 |
carbonisable substances |
accord with y5 |
oxidisable substances |
in conformity with the regulations |
chloride |
≤300ppm
|
burnt residue% |
≤0.1
|
heavy metal |
≤10ppm
|
sulfate% |
≤0.1 |