Sodium metaphosphate
CAS 10361-03-2
EC 233-782-9
Formula HO3P.Na
MW 101.96 g/mol
Salts & Minerals Water TreatmentFood & NutritionTextile, Leather & Paper Chelation & SequestrationPreservation & BiocidepH Regulation & Buffering
Description
Sodium metaphosphate (CAS 10361-03-2) is an inorganic phosphate salt commercially known under trade names including Graham's salt, Kurrol's salt, Sporix, Metafos, and ISMP. It carries no assigned E-code for food applications in the EU and is registered under EC number 233-782-9.
In water treatment, it sequesters calcium and magnesium ions through chelation, preventing scale formation in pipelines and boilers. In textile and paper processing, it functions as a pH buffer and dispersing agent, stabilising process baths and improving fibre treatment consistency. Food-grade applications leverage its sequestrant action to control mineral activity in processed products.
Sodium metaphosphate is available in technical and food-grade forms, supplied as a solid and compliant with REACH registration requirements. Procurement quantities are typically offered in sacked or bulk formats. Buyers should confirm grade-specific compliance with FCC or relevant national food additive standards prior to formulation use.
In water treatment, it sequesters calcium and magnesium ions through chelation, preventing scale formation in pipelines and boilers. In textile and paper processing, it functions as a pH buffer and dispersing agent, stabilising process baths and improving fibre treatment consistency. Food-grade applications leverage its sequestrant action to control mineral activity in processed products.
Sodium metaphosphate is available in technical and food-grade forms, supplied as a solid and compliant with REACH registration requirements. Procurement quantities are typically offered in sacked or bulk formats. Buyers should confirm grade-specific compliance with FCC or relevant national food additive standards prior to formulation use.
Physical Properties
| Melting Point | 628 °C |
| Density | 2.500 g/cm³ (solid) @ Temp: 25 °C |
| Form | solid |
| Water Solubility | 1000g/L |
| pH | 5.7 (10g/l, H2O, 20℃) |
Safety & Handling (Learn More)
Warning GHS07
H
H315H319H335
P
P261P264P271P280P319P321P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 2835 39 00 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Other Names
ISMPSporixMetafoskurrol’ssaltGraham's saltKurrol's saltMaddrell's salt
Related Products
Need a chemical? Get a quote within 24 hours.