(化合物)二リン酸

関: bisphosphate、diphosphate、pyrophosphate

WordNet

a salt or ester of pyrophosphoric acid
street name for lysergic acid diethylamide (同)back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
having the characteristics of an acid; "an acid reaction"

PrepTutorEJDIC

酸性の / 酸味のある,すっぱい(sour) / (言葉・態度などが)厳しい,しんらつな / 酸 / すっぱいもの / 《俗》=LSD

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/07/20 03:18:50」(JST)

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Pyrophosphoric acid, also known under the name diphosphoric acid, is colorless, odorless, hygroscopic and is soluble in water, diethyl ether, and ethyl alcohol. The anhydrous acid has two different forms, which melt at 54.3 °C and 71.5 °C. It is best prepared by ion exchange from sodium pyrophosphate or by reacting hydrogen sulfide with lead pyrophosphate. When phosphoric acid is dehydrated pyrophosphoric acid is produced as one of the products. When molten, pyrophosphoric acid rapidly forms an equilibrium mixture of phosphoric acid, pyrophosphoric acid and polyphosphoric acids. The percentage by weight of pyrophosphoric acid is around 40% and it is difficult to recrystallise from the melt. In aqueous solution pyrophosphoric acid like all polyphosphoric acids hydrolyses and eventually an equilibrium is established between phosphoric acid pyrophosphoric acid and polyphosphoric acids. When highly diluted, an aqueous solution of pyrophosphoric acid contains only phosphoric acid.^[1]

H₄P₂O₇ + H₂O ⇌ 2H₃PO₄

Pyrophosphoric acid is a medium strong inorganic acid. Anions, salts, and esters of pyrophosphoric acid are called pyrophosphates.

While pyrophosporic acid is corrosive, it is not known to be otherwise toxic.^[2]

History

The name pyrophosphoric acid was given by a "Mr. Clarke of Glasgow" in 1827 who is credited with its discovery following the heating to red heat of a sodium phosphate salt. It was found that phosphoric acid when heated to red heat formed pyrophosphoric acid that was readily converted to phosphoric acid by hot water.^[3]

References

^ Corbridge, D. (1995). "Chapter 3: Phosphates". Studies in inorganic Chemistry vol. 20. Elsevier Science B.V. pp. 169–305. ISBN 0-444-89307-5. Retrieved January 30, 2015. – via ScienceDirect (Subscription may be required or content may be available in libraries.)
^ Material Safety Data Sheet: Pyrophosphoric acid MSDS www.sciencelab.com
^ Beck, Lewis Caleb (1834). A Manual of Chemistry: Containing a Condensed View of the Present State of the Science, with Copious References to More Extensive Treatises, Original Papers, Etc. E.W & C Skinner. p. 160. Retrieved January 30, 2015.

External links

Pyrophosphoric acid at PubChem

UpToDate Contents

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English Journal

A two-photon fluorescent probe for biological Cu (Ⅱ) and PPi detection in aqueous solution and in vivo.

Guo M1, Dong P2, Feng Y1, Xi X2, Shao R2, Tian X3, Zhang B4, Zhu M1, Meng X5.
Biosensors & bioelectronics.Biosens Bioelectron.2017 Apr 15;90:276-282. doi: 10.1016/j.bios.2016.11.069. Epub 2016 Nov 30.
PMID 27923190

Fast determination of bioactive phytic acid and pyrophosphate in walnuts using microwave accelerated extraction.

Liu T1, He L2, Valiente M3, López-Mesas M4.
Food chemistry.Food Chem.2017 Apr 15;221:771-775. doi: 10.1016/j.foodchem.2016.11.105. Epub 2016 Nov 23.
PMID 27979271

An efficient strategy to assemble water soluble histidine-perylene diimide and graphene oxide for the detection of PPi in physiological conditions and in vitro.

Muthuraj B1, Mukherjee S2, Chowdhury SR1, Patra CR3, Iyer PK4.
Biosensors & bioelectronics.Biosens Bioelectron.2017 Mar 15;89(Pt 1):636-644. doi: 10.1016/j.bios.2015.12.036. Epub 2015 Dec 15.
PMID 26764162

Japanese Journal

13族元素を添加した種々のリン酸化合物水溶液で練和したリン酸亜鉛セメント硬化体の圧縮強さ

倉田茂昭,楳本貢三
日本歯科理工学会誌 29(6), 537-542, 2010-11-25
リン酸亜鉛セメント硬化体の強度の発現を研究するために,各種リン酸化合物の60%水溶液,ならびに60%リン酸水溶液に13族元素,Al,In,そしてTlを溶解した練和液を調製し,市販のリン酸亜鉛セメントの粉と練和した.その結果,二リン酸ならびにポリリン酸で練和した硬化物の圧縮強さは,正リン酸で練和した硬化物に比べ,それぞれ2.5ならびに4.6倍増加した.また,13族元素を添加した練和液で調製した硬化物 …
NAID 110007988983

頸部頸動脈ステント留置術における術前血小板凝集能測定の有用性

榎本由貴子,吉村紳一,山田清文,高木俊範,岩間亨
脳神経血管内治療 2(3), 188-192, 2008
… 【目的】頸部内頸動脈ステント留置術を施行した18例において血小板凝集能と周術期合併症について検討する．【方法】adenosinediphosphoric acid（ADP），collagen各濃度における最大凝集率と，ADP，collagen凝集能の組み合わせによるgrade分類により術当日の血小板凝集能を評価し，周術期合併症とMRI拡散強調画像（diffusion weighted image，以下DWI）上の無症候性high intensity spot陽性率との関連について検討した．【結果】虚血性合併症 …
NAID 130002148681

無水リン酸結合を共通構造として有する生体エネルギー分子の網羅的検知を目的とした人工酵素バイオセンサ

池野慎也,淺川雅,春山哲也
Proceedings of the Chemical Sensor Symposium 44, 109-111, 2007-09
NAID 40015668784

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リンク元	「ピロリン酸」「二リン酸」「diphosphate」「pyrophosphate」「bisphosphate」

「ピロリン酸」

Pyrophosphoric acid
Names
	IUPAC names Diphosphoric acid; μ-oxido-bis(dihydroxidooxidophosphorus)
	Other names Diphosphoric acid
Identifiers
CAS Number	2466-09-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:29888 ;
ChemSpider	996 ;
ECHA InfoCard	100.017.795
IUPHAR/BPS	3151;
PubChem CID	1023;
UNII	4E862E7GRQ ;
	InChI InChI=1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6) Key: XPPKVPWEQAFLFU-UHFFFAOYSA-N ; InChI=1/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6) Key: XPPKVPWEQAFLFU-UHFFFAOYAX ;
	SMILES O=P(O)(O)OP(=O)(O)O ;
Properties
Chemical formula	H4P2O7
Molar mass	177.97 g/mol
Melting point	71.5 °C (160.7 °F; 344.6 K)
Solubility in water	Extremely soluble
Solubility	Very soluble in alcohol, ether
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	verify (what is ?)
	Infobox references

　　[★]

英: pyrophosphate, PPi, pyrophosphoric acid
同: 二リン酸 diphosphoric acid、焦性リン酸 pyrophosphoric acid、無機ピロリン酸 inorganic pyrophosphate
関: 自由エネルギー

「二リン酸」

　　[★]

英: diphosphate、bisphosphate、pyrophosphate、diphosphoric acid
関: ピロリン酸、二リン酸塩、二リン酸エステル

2つのリン酸が直列

「diphosphate」

　　[★] 二リン酸エステル、二リン酸塩、二リン酸

関: bisphosphate、diphosphoric acid、pyrophosphate

「pyrophosphate」

　　[★] ピロリン酸、二リン酸

関: bisphosphate、diphosphate、diphosphoric acid、PPi

「bisphosphate」

　　[★]

二リン酸エステル、二リン酸

関: diphosphate、diphosphoric acid、pyrophosphate

[StudiesinInorganicvol20-1] Corbridge, D. (1995). "Chapter 3: Phosphates". Studies in inorganic Chemistry vol. 20. Elsevier Science B.V. pp. 169–305. ISBN 0-444-89307-5. Retrieved January 30, 2015. – via ScienceDirect (Subscription may be required or content may be available in libraries.)

[2] Material Safety Data Sheet: Pyrophosphoric acid MSDS www.sciencelab.com

[3] Beck, Lewis Caleb (1834). A Manual of Chemistry: Containing a Condensed View of the Present State of the Science, with Copious References to More Extensive Treatises, Original Papers, Etc. E.W & C Skinner. p. 160. Retrieved January 30, 2015.

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案内

diphosphoric acid