metaphosphoric acid


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Related to metaphosphoric acid: pyrophosphoric acid

met·a·phos·phor·ic acid

 (mĕt′ə-fŏs-fôr′ĭk)
n.
A colorless glassy polymeric phosphoric acid, (HPO3)n, that is highly deliquescent and forms phosphoric acid upon addition of water, used as a dehydrating agent, phosphorylating agent, and in dental cements.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

metaphosphoric acid

(ˌmɛtəfɒsˈfɒrɪk)
n
(Elements & Compounds) a glassy deliquescent highly polymeric solid, used as a dehydrating agent. Formula: (HPO3)n. See also polyphosphoric acid
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.metaphosphoric acid - a glassy solid acid ([HPO3]n) often used as a dehydrating agent
polyphosphoric acid - a series of oxyacids of phosphorus
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References in periodicals archive ?
Approximately 5 mL of the strained rumen fluid was taken for microbial population study while another 10 mL of the fluid was mixed with 2 mL 25% metaphosphoric acid (w:v) for volatile fatty acid analysis.
In addition, 400 [micro]L of the supernatant from the other microcentrifuge tube was mixed with 400 [micro]L of a metaphosphoric acid solution (Sigma Aldrich, St Louis, MO, USA) for deproteination.
A 10 ml of ruminal fluid was acidified with 1 ml H2SO4 (50%) for ruminal NH3-N analysis and 10 ml of ruminal fluid was mixed with 2 ml of 25% (wt/vol) metaphosphoric acid for volatile fatty acid (VFA) analysis.
Briefly, 20 mL of metaphosphoric acid at 4.5% (w/v) was added to 500 mg of the sample and the mixture was stirred with magnetic shaking (P-Selecta, Asincro, Spain) for 15 min under dark conditions.
5 mL of 5% (w/v) metaphosphoric acid in 20% (v/v) methanol was added into the samples, and the mixtures were sonicated in an ultrasonic bath at room temperature for 10 min.
Three mL of supernatant was added to 0.6 mL of 24% metaphosphoric acid in deionized water, and incubated overnight to inhibit bacterial activity in the samples.
Hydrochloric acid, metaphosphoric acid, formic acid, acetic acid, methanol, acetonitrile, sodium metabisulphite, potassium chloride, sodium acetate, acid potassium dichromate, ethyl acetate, and potassium dihydrogen phosphate were purchased from Merck (Madrid, Spain).
TMT, dimethyl sulfoxide (DMSO), metaphosphoric acid, thiobarbituric acid (TBA), sodium azide, Triton X-100, Tween 20, 5,5,-dithiobis(2-nitrobenzoic acid) (DTNB), and all other chemicals were purchased from Sigma-Aldrich Chemical Co.
Briefly, 0.2 ml fresh erythrocytes pellet was added to 1.8 ml distilled water followed by 3 ml precipitating solution (1.65 g metaphosphoric acid, 0.2 g EDTA, and 30 g NaCl in 100 ml distilled water).
Ten grams of sample was blended with 40mL of a solution of 3% metaphosphoric acid in 8% glacial acetic acid, pH 1.5, for 1min.