ShangHai Luyuan Fine Chemical Factory

1. Product Description

Selenious Acid
Molecular Formula: H₂SeO₃
molecular weight :128.97
Behavior: colorless or white crystal,

2. Specifications

Techncial standards:
1) USP23: Content 93%
insoluble matter: up to standard ignition residue0.01%
selenate salts and chloride salts: up to standard

2) Reagent Grade:

Item	Index
Content %	97
insoluble matter %	0.005
ignition residue %	0.1
selenate salts and chloride salts %	0.05
Cl %	0.005
N %	0.05
Fe %	0.002
Heavy metal (On Pb base) %	0.02

Packing: 25kg fiber drum lined with plastic bag for medical grade; 100g/bottle for reagent grade.
Uses: medical intermediates, chemical reagents.

Cu, Na, Bi, Cr, Mg, K, Ca, Co, Zn, Fe, V, Al, Ba, Sr, and Other Salt & Acid.