metaphosphoric acid, sodium salt (CAS 14550-21-1) — formula NaO3P, molecular weight 101.962; category inorganic chemicals.
| CAS Number | 14550-21-1 |
|---|---|
| Molecular Formula | NaO3P |
| Molecular Weight | 101.962 |
| Melting Point | 628 °C |
| Applications | Uses: CIR ingredient: Sodium Metaphosphate, Used in toothpaste and dentifrices (abrasive), detergents, water softeners, food additives (sequestrant and emulsifier), and textile processing, [HSDB], Textiles (Fiber & Fabric Manufacturing) [Category: Industry], Used in toothpaste formulations as an abrasive., Dental polishing agents, detergent builders, sequestrants, emulsifiers, textile processing, laundering., Sodium metaphosphate, In dentifrices, polishing agents, abrasive detergents., Maddrell's salt (polymeric sodim metaphosphate), Water softeners and detergents. For leather tanning, dyeing, laundry work, for the "threshold treatment" of softening industrial water supplies., Glassy sodium metaphosphate, Graham's salt, Use Classification: Food Additives -> EMULSIFIER, SEQUESTRANT, TEXTURIZER, THICKENER -> JECFA Functional Classes, Food Additives -> EMULSIFIER, Cosmetics -> Buffering, Chelating, Industry Uses: Not Known or Reasonably Ascertainable, Binder, Consumer Uses: Not Known or Reasonably Ascertainable, Methods of Manufacturing: Dehydration of sodium phosphates (e.g. Na2H2P2O7, NaH2PO4, Na2HPO4). Upon heating NaH2PO4 or NaNH4HPO4 to 250 °C and then slowly to 350 °C, first Na2H2P2O7 and then the insol Maddrell's salt is obtained, which is stable to about 500 °C, at 505 deg it changes to sodium trimetaphosphate, and above 607 °C to sodium hexametaphosphate. According to Maddrell, Ann. 61, 63 (1847) the salt may be prepd by heating two parts NaNO3 with one part H3PO4. An improved procedure is described by v. Knorre, Z. Anorg. Chem. 24, 397 (1900)., Maddrell's salt (polymeric sodium metaphosphate), Prepd by rapidly chilling molten sodium metaphosphate., Formulations, Preparations: Supplied in the form of a powder, flakes, and as small, broken, glass-like particles., glassy sodium metaphosphate, U.S. Production: 2023: 1, 135, 421 lb, 2022: 956, 855 lb, 2021: 728, 085 lb, 2020: 59, 704 lb, (1977) 5.93X10+10 GRAMS, (1979) 6.71X10+10 GRAMS, General Manufacturing Information: Not Known or Reasonably Ascertainable, Primary Metal Manufacturing, Metaphosphoric acid (HPO3), sodium salt (1:1): ACTIVE, SODIUM METAPHOSPHATE INHIBITED GROWTH OF E COLI., (NaPO3)n where "n" may be 2 or more. Several different forms are known., (NaPO3)n. The value of n ranges from 3 to 10 (cyclic molecules) or may be much larger number (polymer). The vitreous sodium phosphates having N2O, P2O5 mole ratios near unity are classified as sodium metaphosphates (Graham's salts). The average number of of phosphorus atoms per molecule in these glasses ranges from 25 to infinity., The term sodium metaphosphate has also been extended to short-chain vitreous compositions, the molecules of which exhibit the polyphosphate formula Na(n+2)PnO(3n+1) with n as low as 4-5. These materials are more correctly called sodium pyrophosphates., While sometimes called "sodium hexametaphosphate", it is a mixture of polymeric metaphosphates, not a hexamer. |
| Category | Inorganic Chemicals |
Documented applications: Uses: CIR ingredient: Sodium Metaphosphate, Used in toothpaste and dentifrices (abrasive), detergents, water softeners, food additives (sequestrant and emulsifier), and textile processing, [HSDB], Textiles (Fiber & Fabric Manufacturing) [Category: Industry], Used in toothpaste formulations as an abrasive., Dental polishing agents, detergent builders, sequestrants, emulsifiers, textile processing, laundering., Sodium metaphosphate, In dentifrices, polishing agents, abrasive detergents., Maddrell's salt (polymeric sodim metaphosphate), Water softeners and detergents. For leather tanning, dyeing, laundry work, for the "threshold treatment" of softening industrial water supplies., Glassy sodium metaphosphate, Graham's salt, Use Classification: Food Additives -> EMULSIFIER, SEQUESTRANT, TEXTURIZER, THICKENER -> JECFA Functional Classes, Food Additives -> EMULSIFIER, Cosmetics -> Buffering, Chelating, Industry Uses: Not Known or Reasonably Ascertainable, Binder, Consumer Uses: Not Known or Reasonably Ascertainable, Methods of Manufacturing: Dehydration of sodium phosphates (e.g. Na2H2P2O7, NaH2PO4, Na2HPO4). Upon heating NaH2PO4 or NaNH4HPO4 to 250 °C and then slowly to 350 °C, first Na2H2P2O7 and then the insol Maddrell's salt is obtained, which is stable to about 500 °C, at 505 deg it changes to sodium trimetaphosphate, and above 607 °C to sodium hexametaphosphate. According to Maddrell, Ann. 61, 63 (1847) the salt may be prepd by heating two parts NaNO3 with one part H3PO4. An improved procedure is described by v. Knorre, Z. Anorg. Chem. 24, 397 (1900)., Maddrell's salt (polymeric sodium metaphosphate), Prepd by rapidly chilling molten sodium metaphosphate., Formulations, Preparations: Supplied in the form of a powder, flakes, and as small, broken, glass-like particles., glassy sodium metaphosphate, U.S. Production: 2023: 1, 135, 421 lb, 2022: 956, 855 lb, 2021: 728, 085 lb, 2020: 59, 704 lb, (1977) 5.93X10+10 GRAMS, (1979) 6.71X10+10 GRAMS, General Manufacturing Information: Not Known or Reasonably Ascertainable, Primary Metal Manufacturing, Metaphosphoric acid (HPO3), sodium salt (1:1): ACTIVE, SODIUM METAPHOSPHATE INHIBITED GROWTH OF E COLI., (NaPO3)n where "n" may be 2 or more. Several different forms are known., (NaPO3)n. The value of n ranges from 3 to 10 (cyclic molecules) or may be much larger number (polymer). The vitreous sodium phosphates having N2O, P2O5 mole ratios near unity are classified as sodium metaphosphates (Graham's salts). The average number of of phosphorus atoms per molecule in these glasses ranges from 25 to infinity., The term sodium metaphosphate has also been extended to short-chain vitreous compositions, the molecules of which exhibit the polyphosphate formula Na(n+2)PnO(3n+1) with n as low as 4-5. These materials are more correctly called sodium pyrophosphates., While sometimes called "sodium hexametaphosphate", it is a mixture of polymeric metaphosphates, not a hexamer..
metaphosphoric acid, sodium salt is an inorganic compound with CAS registry number 14550-21-1 and molecular formula NaO3P (molecular weight 101.962), belonging to the inorganic chemicals segment of chemical raw materials.
CAS number: 14550-21-1
Its molecular formula NaO3P comprises 1 Na, 3 O, 1 P atoms.
Also known as: metaphosphoric acid, sodium salt · 偏磷酸钠盐
Category: inorganic chemicals
The CAS registry number of metaphosphoric acid, sodium salt is 14550-21-1.
Molecular formula NaO3P, molecular weight 101.962.
It is also registered under: metaphosphoric acid, sodium salt, 偏磷酸钠盐.
Recorded applications: Uses: CIR ingredient: Sodium Metaphosphate, Used in toothpaste and dentifrices (abrasive), detergents, water softeners, food additives (sequestrant and emulsifier), and textile processing, [HSDB], Textiles (Fiber & Fabric Manufacturing) [Category: Industry], Used in toothpaste formulations as an abrasive., Dental polishing agents, detergent builders, sequestrants, emulsifiers, textile processing, laundering., Sodium metaphosphate, In dentifrices, polishing agents, abrasive detergents., Maddrell's salt (polymeric sodim metaphosphate), Water softeners and detergents. For leather tanning, dyeing, laundry work, for the "threshold treatment" of softening industrial water supplies., Glassy sodium metaphosphate, Graham's salt, Use Classification: Food Additives -> EMULSIFIER, SEQUESTRANT, TEXTURIZER, THICKENER -> JECFA Functional Classes, Food Additives -> EMULSIFIER, Cosmetics -> Buffering, Chelating, Industry Uses: Not Known or Reasonably Ascertainable, Binder, Consumer Uses: Not Known or Reasonably Ascertainable, Methods of Manufacturing: Dehydration of sodium phosphates (e.g. Na2H2P2O7, NaH2PO4, Na2HPO4). Upon heating NaH2PO4 or NaNH4HPO4 to 250 °C and then slowly to 350 °C, first Na2H2P2O7 and then the insol Maddrell's salt is obtained, which is stable to about 500 °C, at 505 deg it changes to sodium trimetaphosphate, and above 607 °C to sodium hexametaphosphate. According to Maddrell, Ann. 61, 63 (1847) the salt may be prepd by heating two parts NaNO3 with one part H3PO4. An improved procedure is described by v. Knorre, Z. Anorg. Chem. 24, 397 (1900)., Maddrell's salt (polymeric sodium metaphosphate), Prepd by rapidly chilling molten sodium metaphosphate., Formulations, Preparations: Supplied in the form of a powder, flakes, and as small, broken, glass-like particles., glassy sodium metaphosphate, U.S. Production: 2023: 1, 135, 421 lb, 2022: 956, 855 lb, 2021: 728, 085 lb, 2020: 59, 704 lb, (1977) 5.93X10+10 GRAMS, (1979) 6.71X10+10 GRAMS, General Manufacturing Information: Not Known or Reasonably Ascertainable, Primary Metal Manufacturing, Metaphosphoric acid (HPO3), sodium salt (1:1): ACTIVE, SODIUM METAPHOSPHATE INHIBITED GROWTH OF E COLI., (NaPO3)n where "n" may be 2 or more. Several different forms are known., (NaPO3)n. The value of n ranges from 3 to 10 (cyclic molecules) or may be much larger number (polymer). The vitreous sodium phosphates having N2O, P2O5 mole ratios near unity are classified as sodium metaphosphates (Graham's salts). The average number of of phosphorus atoms per molecule in these glasses ranges from 25 to infinity., The term sodium metaphosphate has also been extended to short-chain vitreous compositions, the molecules of which exhibit the polyphosphate formula Na(n+2)PnO(3n+1) with n as low as 4-5. These materials are more correctly called sodium pyrophosphates., While sometimes called "sodium hexametaphosphate", it is a mixture of polymeric metaphosphates, not a hexamer..
Category: Inorganic Chemicals.
Independent reference data for metaphosphoric acid, sodium salt (CAS 14550-21-1), compiled from public chemistry databases.
| CAS Registry Number | 14550-21-1 |
|---|---|
| PubChem CID | 16133893 |
| Molecular formula | NaO3P |
| UNII (FDA) | 532IUT7IRV |
| Molecular Weight | 101.962 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 0 |
| Exact Mass | 101.94827514 |
| Monoisotopic Mass | 101.94827514 |
| Topological Polar Surface Area | 57.2 |
| Heavy Atom Count | 5 |
| Melting Point | 628 °C |
|---|
Sodium metaphosphate; Kurrol's salt; Sporix; Maddrell's salt; Sodium Kurrol's salt; Insoluble metaphosphate; Sodium metaphosphate (NaPO3); 532IUT7IRV; SODIUM METAPHOSPHATE (NA(PO3)); DTXSID6040244; J139.264F; RefChem:1098817; DTXCID4020244; 233-782-9; 10361-03-2; Metaphosphoric acid, sodium salt
| Regulatory & Food Contact | FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, PH EMULSIFIER; SEQUESTRANT; TEXTURIZER; THICKENER: Food Additives EMULSIFIER OR EMULSIFIER SALT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, PH CONTROL AGENT, SEQUESTRANT, ST GRAHAM'S SALT Group MTDI for phosphorus from all sources, expressed as P TRS 683-JECFA 26/25 |
|---|---|
| GHS notification summary | 90.5% (526 / 581) |
| GHS notification summary | 90.5% (526 / 581) |
|---|---|
| Reported hazard statements | H315 (100%), H319 (100%), H335 (97.6%) |
This chemical does not meet GHS hazard criteria for 90.5% (526 of 581) of all reports.
Reported as not meeting GHS hazard criteria by 526 of 581 companies (only 9.5% companies provided GHS information). For more detailed information, please visit ECHA C&L website.
metaphosphoric acid, sodium salt · CAS 14550-21-1 · NaO3P. UNII 532IUT7IRV. Melting Point: 628 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 偏磷酸钠盐