Sodium phosphite Price — China Factory EXW 2026

Sodium phosphite price Spec: China national standards

China EXW, VAT excluded

Newest China EXW USD 596.24 / MT · VAT excluded +343.3982 (136.00%) as of 20210323

Newest Price 596.24

Price Date 20210323

Day's Change +343.4

Day's Range 596.24 - 939.64

Month's Change +39.45

Month's Range 596.24 - 635.69

Year's Change -55.09

Year's Range 596.24 - 651.33

The food-grade segment is more attractive, but entry barriers are higher due to certification and quality control costs. For traders, the arbitrage between industrial and food-grad...

Also known as Phosphonic acid, sodium salt, sodium,phosphorous acid, sodium,phosphorousaci

Opinions

What are the key differences between food-grade and industrial-grade sodium phosphate, and how do they affect market positioning?

The food-grade segment is more attractive, but entry barriers are higher due to certification and quality control costs. For traders, the arbitrage between industrial and food-grade prices can be interesting, but it requires reliable sourcing and documentation. Watch for changes in food safety regulations that could tighten supply or alter demand patterns.

How is China's sodium phosphate market structured, and what are the key demand drivers?

The substitution trend is real, but don't overlook the price advantage. TSP remains a low-cost option for many industrial users, especially in price-sensitive regions. The real question is whether stricter environmental regulations will force a faster switch to phosphorus-free alternatives in boiler treatment, which could accelerate demand erosion beyond current expectations.

Sodium phosphite price context

What drives Sodium phosphite prices

What are the key differences between food-grade and industrial-grade sodium phosphate, and how do they affect market positioning?: The food-grade segment is more attractive, but entry barriers are higher due to certification and quality control costs. For traders, the arbitrage between indu...

How is China's sodium phosphate market structured, and what are the key demand drivers?: The substitution trend is real, but don't overlook the price advantage. TSP remains a low-cost option for many industrial users, especially in price-sensitive r...

How we assess Sodium phosphite price

China factory / mainstream market EXW quotes (VAT excluded where shown) - not a single global public index

Regional and specification detail so buyers can compare like-for-like grades

Landed cost figures from our calculator are planning estimates, not a customs ruling

Overview

Sodium phosphite (trisodium phosphate, TSP, CAS 15475-67-9) is a colourless-to-white crystalline powder or hydrate that dissolves readily in water to form a strongly alkaline solution (pH ~11.5–12.1). It functions primarily as a water softener, scale inhibitor, and pH regulator across industrial and food applications.

Industrial: acts as a boiler water treatment agent, precipitating calcium and magnesium salts to prevent scale formation and extend equipment life.
Food: used as a quality improver, emulsifier, and nutritional supplement, enhancing metal-ion chelation and water retention in processed foods.
Metals & textiles: applied in rust prevention, phosphating treatments, and as a mercerising enhancer for fabrics.
Paper & detergents: serves as a cooking agent in pulp processing and a builder in cleaning formulations.

China's output spans both industrial and food grades, with food-grade material commanding higher purity standards. Production is largely domestic, meeting local demand in boiler treatment and detergent sectors, though export and import flows vary by grade. The market is mature, with steady demand from water treatment and paper industries.

Key domestic producers:
Jiangsu Chengxing Phosphorus Chemical – major integrated phosphate producer.
Sichuan Shifang Chuanhong Phosphorus Chemical – industrial and food grades.
Qingzhou Zhenhua Chemical – established TSP manufacturer.
Shifang Shengdiya Chemical – regional supplier of phosphate products.

Properties

Name

Sodium phosphite

Phosphonic acid, sodium salt

sodium,phosphorous acid

sodium,phosphorousaci

CAS Number

15475-67-9

HS Code

2835290000

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