- Metaphosphoric acid
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- $1.00 / 1KG
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2019-07-12
- CAS:37267-86-0
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 25kg
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Product Name: | Metaphosphoric acid | Synonyms: | Metaphosphoric acid, 33.5-36.5 wt. %, balance NaPO3 stabilizer, ACS;Phosphoric Acid, Meta, Meta;METAPHOSPHORIC ACID;VITREOUS SODIUM ACID METAPHOSPHATE;PHOSPHORIC ACID, META;M-PHOSPHORIC ACID;metaphosphoric;METAPHOSPHORIC ACID CHIP A.C.S. REAGE& | CAS: | 37267-86-0 | MF: | HO3P | MW: | 79.98 | EINECS: | 253-433-4 | Product Categories: | UVCBs-inorganic | Mol File: | 37267-86-0.mol | ![Metaphosphoric acid Structure](CAS/GIF/37267-86-0.gif) |
| Metaphosphoric acid Chemical Properties |
Melting point | 21°C | Boiling point | 158°C | density | 2 g/cm3 | vapor pressure | 0.04 hPa at 20 °C | storage temp. | Store below +30°C. | solubility | Soluble in alcohol. | form | pieces | color | Glassy | Odor | Odorless | Water Solubility | Decomposes in water. Soluble in alcohol. | Sensitive | Hygroscopic | Merck | 14,7345 | Stability: | Stable. Incompatible with strong bases, most metals. | CAS DataBase Reference | 37267-86-0(CAS DataBase Reference) | EPA Substance Registry System | Metaphosphoric acid (37267-86-0) |
Hazard Codes | C | Risk Statements | 34-35-22-37 | Safety Statements | 26-36/37/39-45 | RIDADR | UN 3260 8/PG 3 | WGK Germany | 3 | F | 3 | TSCA | Yes | HazardClass | 8 | PackingGroup | III | HS Code | 28092019 |
| Metaphosphoric acid Usage And Synthesis |
Physical Properties | Glass-like colorless solid; soft and transparent; deliquesces; sublimes at red heat; dissolves slowly in cold water, decomposing to phosphoric acid; soluble in alcohol.
| Preparation | Metaphosphoric acid is obtained as a polymeric glassy solid by prolonged heating of phosphoric acid. Either phosphoric acid, H3PO4, or pyrophosphoric acid, H4P2O7, when heated above 300°C, on cooling yields the transparent glassy mass of composition (HPO3)n.
Metaphosphoric acid also is obtained from partial hydration of phosphorus pentoxide by dissolving it in cold water.
| Uses | In dentistry for making zinc oxyphosphate cement; as reagent in chemical analysis. | Uses | An inorganic reagent used for research purposes | Uses | Metaphosphoric acid is used as a dehydrating agent. Its derivative, sodium hexametaphosphate is used as a sequestrant and a food additive. It is also used as phosphorylating agent, analytical reagent and in dental cements. | Definition | ChEBI: Phosphonate(1-) is a monovalent inorganic anion obtained by deprotonation of one of the two OH groups in phosphonic acid. It is a phosphorus oxoanion and a monovalent inorganic anion. It is a conjugate base of a phosphonic acid. It is a conjugate acid of a phosphonate(2-). | General Description | meta-Phosphoric acid is a monobasic acid. |
| Metaphosphoric acid Preparation Products And Raw materials |
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