Phosphorous acid, China Phosphorous acid Supplier,Factory

Phosphorous acid

Lianyungang Dawnbright International Trade Co., Ltd. [China]

Minimum Order: 0

Quality/Safety Certification: 0.00

1.We are Phosphorous acid manufacturer;
2.First-grade qulity, purity: 99%;
3.Technological innovatio;

Product Name:

Phosphorous acid

CAS RN:

13598-36-2

Molecular Formula:

H3PO3

Molecular Weight:

82.00

CAS RN:

13598-36-2

UN Code:

2834

Spec.:

Quality Standard (HG/T 2520-93)

Item	Best Quality	First Quality
Assay(H3PO3), %≥	99.0	99.0
Iron(Fe), %≤	0.001	0.003
Chloride (CL), %≤	0.01	0.02
Sulphates (SO4), %≤	0.008	0.01
Phosphate(PO4), %≤	0.2	0.6
Appearance	pure white crystal	white crystal
70% aqueous solution test	colorless transparent	colorless transparent; no impurities
Liquid phosphorous acid, %≥	70-80	colorless transparent

Properties:

Colorless crystal; relative density: 1.651(21.1°C); m.p.: 73.6°C; b.p.: 200°C(decomposed); easily soluble in water and alcohols; will be gradually oxidized into orthophosphoric acid in the air; will be decomposed into orthophosphoric acid and phosphine at 180°C. It has high reducibility and hygroscopicity.

Use:

As reducing agent, whitening agent for nylon, in the synthesis of synthetic; in the manufacture of pesticides, bactercides and water stabilizers etc.