PRODUCTS

SODIUM METAPHOSPHATE

Sodium metaphosphate is used in the fabric printing and dyeing, tanning, paper making, color film, soil analysis, radiation chemistry and analytical chemistry and other departments also have a certain use.
Sodium metaphosphate is used in toothpaste and dentifrices (abrasive), detergents, water softeners, food additives (sequestrant and emulsifier), and textile processing.

CAS Number: 10361-03-2 / 50813-16-6
EC Number: 233-782-9 / 256-779-4
MDL Number:MFCD00011490
Chem/IUPAC Name: Sodium metaphosphate
Molecular Formula: NaO3P
Molecular Weight: 101.962 g/mol

SYNONYMS:
Sodium metaphosphate, 10361-03-2, Kurrol's salt, Sporix, Maddrell's salt, Sodium Kurrol's salt, Metaphosphoric acid, sodium salt, Sodium phosphate (NaPO3), Metaphosphoric acid (HPO3), sodium salt, Insoluble metaphosphate, EINECS 238-595-6, 50813-16-6, 532IUT7IRV, 14550-21-1, Sodium metaphosphate (NaPO3), HSDB 5055, EINECS 233-782-9, UNII-532IUT7IRV, Insoluble sodium metaphosphate, Sodium metaphosphate, insoluble, NaO3P, SODIUM METAPHOSPHATE (NA(PO3)), Metaphosphoric acid (HPO3), sodium salt (1:1), SCHEMBL49117, Metaphosphoric acid,sodium salt, DTXSID6040244, SODIUM METAPHOSPHATE [VANDF], SODIUM METAPHOSPHATE [WHO-DD], FS178534, J139.264F, O0593, Q4291659, grahamsches salz, hexametaphosphate, sodium salt, hexasodium 2,4,6,8,10,12-hexaoxido-1,3,5,7,9,11-hexaoxa-2lambda5,4lambda5,6lambda5,8lambda5,10lambda5,12lambda5-hexaphosphacyclododecane 2,4,6,8,10,12-hexaoxid, hexasodium hexametaphosphate, hexasodium metaphosphate, HMP, meta, phosphoric acid sodium salt, sodium hexametaphosphate, sodium metapolyphosphate, sodium polymetaphosphate, sodium polyphosphate, sodiumhexametaphosphate, ISMP, GRAHAM'S SALT, SODIUM M-PHOSPHATE, SODIUM PHOSPHATE, PH 6.8, Sodium acid metaphosphate, INSOLUBLE SODIUM METAPHOSPHATE, Insoluble metaphosphate, Insoluble sodium metaphosphate, Sodium metaphosphate, insoluble, Graham's salt, Kurrol's salt, Maddrell's salt, Metafos, Metaphosphoric acid (HPO3), sodium salt, Metaphosphoric acid (HPO3), sodium salt, homopolymer, Poly(sodium metaphosphate), Polymeric sodium metaphosphate, Sodium Kurrol's salt, Sodium phosphate (NaPO3), Sporix, [ChemIDplus] Maddrell’s salt, Polymeric sodium metaphosphate, [Merck Index]

Sodium Metaphosphate is a white crystalline powder.
Sodium metaphosphate is almost insoluble in water, soluble in mineral acids and potassium chloride, and ammonium chloride solutions.
Sodium metaphosphate is a white crystalline powder.

Sodium metaphosphate is soluble in inorganic acid, potassium chloride and ammonium chloride solution.
Sodium metaphosphate is practically insoluble in water.
A (1:3) slurry was prepared in water with a pH of about 6.5.

Sodium Metaphosphate is a linear sodium polyphosphate.
Sodium Metaphosphate, Sodium Trimetaphosphate and Sodium Hexametaphosphate are all sodium polyphosphates made of repeating units of NaPO3.

Sodium Metaphosphate generally refers to a long chain of NaPO3 units that is not soluble in water, which is why it is sometimes called insoluble metaphosphate.

Sodium Trimetaphosphate has three NaPO3 units, and Sodium Hexametaphosphate has six NaPO3 units.
Both the Trimetaphosphate and the Hexametaphosphate are soluble in water.
Sodium metaphosphate is a white solid, practically insoluble in water.

USES and APPLICATIONS of SODIUM METAPHOSPHATE:
Sodium metaphosphate is used as emulsifier, tissue improver and chelating agent in food industry.
Sodium metaphosphate has strong hygroscopicity and begins to become sticky after moisture absorption.
For some metal ions (such as calcium, magnesium, etc.) have the ability to form soluble complexes, Sodium metaphosphate can be used to soften water.

And lead, silver plasma will also produce precipitation, these precipitation complex dissolved in excess of Sodium metaphosphate solution to form a complex, barium salt can also form a complex with sodium hexametaphosphate.

Sodium metaphosphate is used as a high-efficiency water softener for power station, locomotive and vehicle boiler water, an auxiliary agent for detergent, an agent for controlling or preventing corrosion, a cement hardening Accelerator, a streptomycin purifying agent, and a cleaning agent for fiber industry and bleaching and dyeing industry.

Sodium metaphosphate is used as a sedative in medicine and as a preservative, stabilizer and fruit juice precipitant in the food industry.
In the petroleum industry, Sodium metaphosphate is used for rust prevention of drill pipes and for controlling the viscosity of mud in oil drilling.

Water Treatment & Detergents: Sodium metaphosphate acts as a sequestrant, water softener (e.g., Calgon), and detergent additive to prevent scale and corrosion
Food Industry: Sodium metaphosphate is used as a buffering, dispersing, or texture-improving agent in canned vegetables, dairy, meats, and surimi; retains moisture and prevents crystallization.

Dental & Abrasives: Sodium metaphosphate functions in toothpaste and dentifrices as a polishing or abrasive agent.
Industrial Uses: Sodium metaphosphate is utilized in textile, paper, photographic industries, and as corrosion inhibitors, flocculants, and photofinishing compounds.

Analytical & Laboratory: Sodium metaphosphate serves in analytical chemistry, soil analysis, and as reagent in dyeing or fabric treatment processing.
Sodium metaphosphate is mainly used as an emulsifier, chelating agent, and tissue modifier.

Sodium metaphosphate powder is mainly used as an emulsifier, chelating agent, and tissue modifier.
In cosmetics and personal care products, Sodium Metaphosphate, Sodium Trimetaphosphate and Sodium Hexametaphosphate are used in the formulation of makeup foundations, mascara, bath products, and moisturizing and skin care products.

WHY IS SODIUM METAPHOSPHATE USED?
Sodium Metaphosphate, Trimetaphosphate and Hexametaphosphate inactivate metallic ions so as to prevent the deterioration of cosmetics and personal care products.

Sodium Metaphosphate is also used to polish the teeth, reduce oral odor, or otherwise cleanse or deodorize the teeth and mouth.
Sodium Trimetaphosphate minimizes the change in the pH of a solution when an acid or a base is added to the solution and Sodium Hexametaphosphate prevents the corrosion (rust) of metallic materials used in packaging cosmetics and personal care products.

SCIENTIFIC FACTS of SODIUM METAPHOSPHATE:
Sodium Trimetaphosphate, and Hexametaphosphate are all inorganic salts that are often referred to as glassy sodium polyphosphates.
Sodium Metaphosphate, in the form of long chains, is referred to as insoluble metaphosphate.

BENEFITS & KEY CHARACTERISTICS of SODIUM METAPHOSPHATE:
*Excellent Chelating Agent:
Strong ability to complex with Ca²⁺, Mg²⁺, and other metal ions

*Buffering & pH Control:
Sodium metaphosphate maintains mild pH levels suitable for food and cleaning formulations

*Highly Soluble & Hygroscopic:
Sodium metaphosphate dissolves well in hot water; hygroscopic nature enables moisture retention

*Multipurpose Utility:
Effective across food, personal care, industrial, and water treatment sectors

CHEMICAL PROPERTIES of SODIUM METAPHOSPHATE:
Extremely hygroscopic; Sodium metaphosphate becomes moist and sticky even after standing in the air for a short time.
Sodium metaphosphate dissolves slowly in cold water but is quite soluble in warm water between 30 and 50°C.

According to Bronnikov, solubility of Sodium metaphosphate is (20°C) 973.2 g./liter; (80°C) 1744 g./liter.
Sodium metaphosphate's solutions give precipitates with Mg, Ca, Ba, Pb and Ag salts.
These precipitates are soluble in an excess of the polyphosphate.

Concentrated NaCl solution and alcohol flocculate the solutions, gradually forming a viscous, oily mass.
No definite melting point; with careful heating, the material starts to liquefy somewhat above 600°C.
Sodium Metaphosphate Powder (CAS 10124-56-8) is a white powder with the molecular formula NaPO3.

NATURE of SODIUM METAPHOSPHATE:
Sodium metaphosphate is a macromolecular long-chain polyphosphate having a high degree of polymerization has a composition similar to that of metaphosphate.
The average value of 72 for most of these salts is usually in the range of 500 to 1000.

This long-chain polyphosphate, Sodium metaphosphate, is often referred to as metaphosphate because its NA20/P2O5 molar ratio is measured to be close to 1.

After the formal determination of the partial phosphate refers to the cyclic structure of the compound.
The long-chain crystalline polyphosphate sodium salt is generally referred to as the high temperature type (NaPO3-II), the low temperature type (NaPO3-III), and the three variants (NaPO3-IX) of the salt.

PREPARATION METHOD of SODIUM METAPHOSPHATE:
Sodium dihydrogen phosphate method:
The edible sodium dihydrogen phosphate is heated, dehydrated at 95 ℃ to become anhydrous sodium dihydrogen phosphate, and then sent into the box type polymerization furnace to heat and melt polymerization, when the material temperature is 140~200 ℃, first, it is converted into sodium acid pyrophosphate, and then it is converted into cyclic sodium metaphosphate when heated to 260 ℃.
After cooling and crushing, the edible sodium metaphosphate product is prepared.

PHYSICAL AND CHEMICAL PROPERTIES of SODIUM METAPHOSPHATE:
Sodium metaphosphate, molecular formula NaPO3, molecular weight 101.96.
Sodium metaphosphate is often present in the form of a polymer of (NaPO3)6 sodium hexametaphosphate (also known as "Graves' salt").
Density (20 degrees C) of Sodium metaphosphate is 2.484g/cm3.

Melting point ofSodium metaphosphate is 640 °c.
Heat of formation of Sodium metaphosphate is -1206.3 kJ/mol.

The phosphoric anhydride and soda ash are mixed in the stirrer according to the ratio of 1:0.8, then the mixture is put into the graphite crucible, and the melting polymerization is carried out at the temperature of 750 ℃-850 ℃, Sodium metaphosphate was obtained after rapid removal and quenching in a cooling tray.

Or the anhydrous sodium dihydrogen phosphate after drying and dehydration is heated in a graphite crucible at a temperature of 700-800 ℃ for about 1 h-1.5 h.
The Sodium metaphosphate is quickly taken out and quenched in a cooling tray to obtain it.

Transparent glass flake or white granular crystals.
The solubility in water is large, but the dissolution rate is slow, and the aqueous solution is acidic.
In warm water, acid or alkali solution easily hydrolyzed into orthophosphate.

PHYSICAL and CHEMICAL PROPERTIES of SODIUM METAPHOSPHATE:
PH: pH(50g/l, 25℃) 5.7～6.3
CAS DataBase Reference: 35270-09-8
Molecular Weight: 101.962 g/mol
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 3
Rotatable Bond Count: 0
Exact Mass: 101.94827514 Da
Monoisotopic Mass: 101.94827514 Da
Topological Polar Surface Area: 57.2 Å²
Heavy Atom Count: 5
Formal Charge: 0
Complexity: 49.8

Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 2
Compound Is Canonicalized: No
Appearance: white crystalline powder (est)
Assay: 90.00 to 100.00
Food Chemicals Codex Listed: No
Flash Point: 32.00 °F. TCC ( 0.00 °C. ) (est)

Soluble in: mineral acids
Insoluble in: water
CBNumber: CB1715462
Molecular Formula: NaO3P
Molecular Weight: 101.96
MDL Number: MFCD00011490
Physical state: solid
Color: white
Odor: No data available

Melting point/freezing point: 628 °C
Initial boiling point and boiling range: No data available
Flammability (solid, gas): The product is not flammable.
Upper/lower flammability or explosive limits: No data available
Flash point: Not applicable
Autoignition temperature: No data available
Decomposition temperature: No data available
pH: 5.7 at 10 g/l at 20 °C
Viscosity, kinematic: No data available
Viscosity, dynamic: No data available

Water solubility: No data available
Partition coefficient: n-octanol/water: No data available
Vapor pressure: No data available
Density: 2,476 g/cm3
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: No data available
Other safety information: Bulk density ca.1.000 kg/m3

FIRST AID MEASURES of SODIUM METAPHOSPHATE:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of SODIUM METAPHOSPHATE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of SODIUM METAPHOSPHATE:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of SODIUM METAPHOSPHATE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of SODIUM METAPHOSPHATE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of SODIUM METAPHOSPHATE:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available