SYNONYM: ammo hypo;
ammonium hyposulfite; ammonium thiosulfate; diammonium thiosulfate;
Thiosulfuric acid, diammonium salt; Thiosulfuric acid (H2S2O3), diammonium salt
FORMULA: H8N2O3S2
M. W. : 148.1948
CAS
NO.: 7783-18-8
GRADE: TECH. GRADE
DESCRIPTION: Colorless transparent liquid. Relative density of
crystal: 1.679, easily soluble in water, insoluble in alcohol, ether, slightly
soluble in acetone.
SPECIFICATIONS:
|
(NH4)2S2O3 |
56-60% |
|
sulfite |
≤0.6% |
|
Basicity
|
0.3-1.5% |
|
Heavy
metals |
≤0ppm |
|
Fe |
≤10ppm |
|
Residue
on ignition |
≤0.1% |
|
SG |
1.310-1.335 |
|
APPEARANCE |
Colorless
transparent liquid |
USES: Used as fixer for taking photos, key component of silvering electrobath,
shielding effect agent, bactericide and analytical reagent.
PACKING: 250KG OR 270KG PER PLASTIC DRUM,
20MTS OR 21.6MTS(80DRUMS)/20’FCL.
H.S. NO.: 2832.3000