Metaphosphoric acid
Metaphosphoric acid Basic information
- Product Name:
- Metaphosphoric acid
- Synonyms:
-
- METAPHOSPHORIC ACID, CHIP, REAGENTPLUS, 99.99%
- META-PHOSPHORIC ACID ~65%, PIECES
- METAPHOSPHORIC ACID, ACS REAGENT
- METAPHOSPHORIC ACID, EXTRA PURE ( SOLID)
- Meta-PhosphoricAcidGr(GlacialSticks)
- M-PhosphoricAcidGr
- Metaphosphoricacid,ACS
- Metaphosphoric acid, stabilized
- 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 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)
Safety Information
- 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
MSDS
- Language:English Provider:ACROS
- Language:English Provider:SigmaAldrich
- Language:English Provider:ALFA
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
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.
Uses
In dentistry for making zinc oxyphosphate cement; as reagent in chemical analysis.
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.
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Metaphosphoric acid(37267-86-0)Related Product Information
- BARIUM METAPHOSPHATE
- Aluminum metaphosphate
- metaphosphoric acid potassium salt,Metaphosphoric acid (HPO3), potassium salt
- Magnesium titanium oxide
- LITHIUM METABORATE
- SODIUM METASILICATE PENTAHYDRATE
- AMMONIUM (META)TUNGSTATE HYDRATE
- Sodium metavanadate
- LITHIUM METAPHOSPHATE
- Sodium polyphosphate
- sodium hexametaphosphate
- Hexamethylphosphoramide
- Sodium tripolyphosphate
- Metaphosphoric acid sodium salt
- metaphosphoric acid trisodium salt
- Phosphorus oxychloride
- Sodium Tetrametaphosphate
- Metaphosphoric acid, calcium salt,metaphosphoric acid (hpo3), calcium salt,Metaphosphoric acid,calcium salt