Physical Properties Preparation
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Metaphosphoric acid

Physical Properties Preparation
Product Name
Metaphosphoric acid
CAS No.
37267-86-0
Chemical Name
Metaphosphoric acid
Synonyms
metaphosphoric;M-PHOSPHORIC ACID;Metaphosphoricaci;M-PhosphoricAcidGr;METAPHOSPHORIC ACID;PHOSPHORIC ACID, META;stabilized with NaPO3;Metaphosphoricacid,ACS;meta-PHOSPHORIC ACID AR;M-PHOSPHORIC ACID STICKS
CBNumber
CB2853567
Molecular Formula
HO3P
Formula Weight
79.98
MOL File
37267-86-0.mol
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Metaphosphoric acid Property

Melting point:
21°C
Boiling point:
158°C
bulk density
1000kg/m3
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
PH
2 (20°C, 33g/L in H2O)
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)
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Safety

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
3
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
28092019
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
239275
Product name
meta-Phosphoric acid
Purity
ACS reagent, chips, 33.5-36.5%
Packaging
5g
Price
$59.9
Updated
2024/03/01
Sigma-Aldrich
Product number
239275
Product name
meta-Phosphoric acid
Purity
ACS reagent, chips, 33.5-36.5%
Packaging
2.5kg
Price
$2150
Updated
2024/03/01
Sigma-Aldrich
Product number
1.00546
Product name
meta-Phosphoric acid
Purity
pieces for analysis (stabilized with sodium metaphosphate) EMSURE?
Packaging
100g
Price
$200
Updated
2024/03/01
Sigma-Aldrich
Product number
1.00546
Product name
meta-Phosphoric acid
Purity
pieces for analysis (stabilized with sodium metaphosphate) EMSURE?
Packaging
500g
Price
$473
Updated
2024/03/01
Alfa Aesar
Product number
033267
Product name
Metaphosphoric acid, ACS, 33.5-36.5%, bal. NaPO<sub>3</sub> (Stablizer)
Packaging
10g
Price
$38.65
Updated
2024/03/01
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Metaphosphoric acid Chemical Properties,Usage,Production

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.

Metaphosphoric acid Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from Metaphosphoric acid manufacturers

Career Henan Chemical Co
Product
Metaphosphoric acid 37267-86-0
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
25kg
Release date
2019-07-11

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