SODIUM HEXAMETAPHOSPHATE- ▸ Water treatment: Sequestrant and threshold scale/corrosion inhibitor
- ▸ Detergents: Water softener and builder
- ▸ Industrial dispersant: Deflocculant for clays and pigments
- ▸ Food processing: Sequestrant and emulsifying salt
- ▸ Drilling fluids: Viscosity thinner
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Sodium hexametaphosphate (CAS 10124-56-8, SHMP), a sodium polyphosphate. Used in water treatment as a sequestrant and scale/corrosion inhibitor, in detergents, as a dispersant for clays and pigments, as a food additive (sequestrant and emulsifying salt), and as a thinner for drilling fluids.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 233-343-1
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Sodium Hexametaphosphate (SHMP) & Phytate Sequestrants for Hard-Water Haze, Scale & Precipitates (Food & Beverage)
- Phosphonate Antiscalants & Sequestrants for Machines (Home & Industrial Care)
- RO Antiscalants: Reverse Osmosis Scale Control (Water Treatment)
Frequently Asked Questions
What is another name for sodium hexametaphosphate?
Sodium hexametaphosphate (CAS 10124-56-8) is abbreviated SHMP and is a sodium polyphosphate, sometimes referred to as Graham's salt. It is used as a sequestrant, dispersant, and scale/corrosion inhibitor.
What is sodium hexametaphosphate used for?
SHMP is used in water treatment as a sequestrant and threshold scale/corrosion inhibitor, in detergents as a water softener and builder, as a dispersant (deflocculant) for clays and pigments, as a food-grade sequestrant and emulsifying salt, and as a thinner for drilling fluids.
What is the chemical formula of sodium hexametaphosphate?
SHMP has the formula Na6O18P6 (CAS 10124-56-8). It is a sodium polyphosphate.
What HS code is sodium hexametaphosphate?
SHMP is classified under HS 2835.39 (polyphosphates, other). Confirm the destination-country tariff line and request the CoA and SDS with your order.
How is bulk sodium hexametaphosphate supplied and priced?
It is supplied to water-treatment, detergent, ceramic, and food manufacturers as a powder, granules, or glassy flakes in bags or drums. Pricing depends on grade (technical vs. food) and volume — request a bulk quote with your target quantity.
What is the REACH and TSCA regulatory status of Sodium Hexametaphosphate (SHMP)?
Sodium Hexametaphosphate (SHMP) (CAS 10124-56-8) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 233-343-1).