Phosphorous acid 99% min

1)Our Phosphorous acid was PRODUCED BY PCl3 DIRECTLY 2)NO RECYCLE MATERIAL INSIDE 3)Favorable price + trustworthy quality Specifications

1.  Chemical Name:  Phosphorous Acid

2.  Synonyms: Orthophosphorous acid; Phosphonic acid

3.   CAS No.: 13598-36-2

4.   EC No.: 233-663-1

5.  Transportation Info:

Class 8;

UN2834;

PG III

                                                                      Phosphorous acid

Molecular weight	81.99
CAS No.	13598-36-2
Density	1.65
Melting point	73
Boiling point	200
Character	Achromatic crystal,density1.65g/m3,better hygroscopi-city,dissolved easily in the water,has corrosive characteristics
Usage	Widely used as the raw materials to make phosphorous acid salt,used as the raw materials for making of plasticstabilizator in the plastic industry,used as reducer in chemical reaction,also used in the olefin industry, agricultural chemical industry and so on.
Export	Film Plastic Knitted Bag,kraft paper complex bag innerlayer,double layers plastic bag with net weight of 25kg

          Quality Index(The Chemistry Industry HG/T2520-93Standards of the Peoples Republic of China)

Inspection items	The degree of the products
	Best GradeProducts	Best GradeProducts	First gradeproducts
Main contents(counted with H3PO3)	99	98.5	98
Iron(counted with Fe)	0.001	0.0015	0.0020
Chloride(counted with C1)	0.008	0.01	0.01
Sulfate(counted with SO4)	0.001	0.002	0.002
Phosphate(counted with SO4)	0.1	0.2	0.2
Complexion	White crystal	White crystal	White crystal
Water solution experiments	White crystal	Clear and achromatic	Clear and achromatic

PropertiesPhosphorous acid is a colorless crystal. It can be slowly oxidized to phosphoric acid in the air. When heated to 180 °C, it can be decomposed into phosphoric acid and phosphine (highly toxic). As a dibasic acid, it has slightly ber acidity than phosphoric acid. Phosphorous acid has b reducibility and can easily reduce Ag+ to metal silver. It can also reduce sulfuric acid to sulfur dioxide. It is corrosive and has b hygroscopicity. Relative Density: 1.651 (21.1 °C)Melting Point: 73.6 °CBoiling Point: 200 °C (Decomposes)Solubility: Easily soluble in water and alcohol.

ApplicationsPhosphorous acid is mainly used in the production of phosphates, synthetic fibers and organophosphorus pesticides, etc.. It is also used in producing high performance water treating agent ATMP.

Packing25kg / 500kg / 1000kg in woven bag lined with double layer polythene bag.The packaging should be marked with "CORROSIVE"sign.

Output 30,000 tons per year

Phosphorous acid 99% min