Phosphorous Acid 70% Solution

Phosphorous acid is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.

We import a highly price competitive, REACH registered, ready made 70% w/w solution of Phosphorous  Acid in water with the following specification:


Test Test Method Limits


TI447 Clear yellow liquid
Purity TI 410 68.0 – 73.0% w/w H3PO3
HCl TI 410 < 1.5%
Chloride TI 479 < 1.2%
Arsenic ICP_AS 0 – 3 mg/litre
Density at 20°C TI 468 1.4 – 1.435
Packaging 200litre/250kg open top plastic drums,

1300kg IBC’s or

26,000kg tankers

CAS Number 13598-36-2
Minimum Order Quantity 20 tonnes preferably

but down to 10 tonnes is possible

Please contact us for more information, a price quotation, a Material Safety Data sheet or samples.

Lead times are typically 7-10 days from receipt of order from our Western European manufacturing partner.

This is a case study in our ability to source highly competitive raw materials and was identified as part of a routine sourcing request.

This page uses material from the related Wikipedia article which is released under the Creative Commons Attribution-Share-Alike License 3.0.

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