USD $1.00-1.00 / Kilogram
USD $10.00-25.00 / Kilogram
USD $10.00-25.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $10.00-25.00 / Kilogram
USD $10.00-25.00 / Kilogram
USD $10.00-25.00 / Kilogram
USD $10.00-25.00 / Kilogram
cas no:7758-02-3
einecs no:231-830-3
molecular formula:brk
molecular weight:119.0023
description: white crystal, no smell, bitter taste; relative gravity: 2.75(25/4°c); melting point:734°c; boiling point: 1435°c; soluble in water and glycerol; lightly soluble in alcohol and ether .
uses:industrial grade: carving, stone printing; pharmaceutical grade: sedative; phtography grade: photographic film.
packing :compound bag, fiber can 30×37(cm), inner double layer plastic bag, 25 kg.
specification:
item |
pharmaceutical grade |
phtography grade |
reagent grade 3 |
industrial grade |
content% ≥ |
99.0 |
99.0 |
98.0 |
98.0 |
aqueous solution reaction |
qualified passed |
qualified passed |
qualified passed |
|
chloride(cl)% ≤ |
0.2 |
0.5 |
0.5 |
1.0 |
sulfate(so4)% ≤ |
0.005 |
0.005 |
0.005 |
|
ferrym(fe)% ≤ |
0.0002 |
0.0002 |
0.0002 |
0.005 |
bromate(bro3)% ≤ |
0.005 |
0.003 |
0.003 |
|
iodide(i)% ≤ |
qualified passed |
0.01 |
0.01 |
|
heavy metal(pb)% ≤ |
0.0002 |
0.0001 |
0.0005 |
|
arsenic(as) ≤ |
0.0005 |
|
|
|
loss on drying% ≤ loss on |
0.5 |
0.5 |
0.5 |
1.0 |
water insoluble% ≤ |
qualified |
0.01 |
0.01 |
|
reference standard |
1995-china pharmacopeia |
zbg85001-88 |
gb1277-77 |
gb1277-77 |