USD $5.00-10.00 / Gram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
product name : iohexol
molecular formula : c19h26i3n3o9
molecualr weight : 821.14
cas no. : 66108-95-0
characteristics : white or yellowish powder
loss on drying : 1.5% max
assay(hplc) : 99.0% min
packing : 25kg or 50kg /drum
storage : preserve in tight containers and protect from light.
items
|
standards
|
|
1 |
characteristics
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white or yellowish powder, has hygroscopicity
|
2
|
specific rotation[a]
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-0.5°~+0.5°
|
3
|
loss on drying
|
4.0% max
|
4
|
heavy metals
|
20ppm
|
5
|
free aromatic amine
|
0.05%
|
6
|
free iodine
|
the toluene layer shows no red color
|
7
|
free iodide
|
20ppm
|
8
|
ionic compounds
|
0.05%
|
9
|
residual solvents
|
methanol, 0.3% max; n-butanol, 0.5% max; ethylene glycol monomethyl ether, 50ppm max; 3-chloro-1,2-propanediol, 0.01% max
|
10
|
residue on ignition
|
0.1% max
|
11
|
ferric salt
|
10ppm max
|
12
|
o-alkyl compounds
|
0.6% max
|
13
|
related substances
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0.4% max
|
14
|
assay
|
98.0~102.0%
|