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Merck
모든 사진(3)

주요 문서

208213

Sigma-Aldrich

Polyphosphoric acid

greener alternative

reagent grade, 115% H3PO4 basis

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About This Item

Linear Formula:
Hn+2PnO3n+1
CAS Number:
EC Number:
MDL number:
UNSPSC 코드:
12352106
eCl@ss:
38070203
NACRES:
NA.21

Grade

reagent grade

Quality Level

분석

115% H3PO4 basis

형태

viscous liquid

환경친화적 대안 제품 특성

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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bp

300 °C (lit.)

density

2.06 g/mL at 25 °C

환경친화적 대안 카테고리

InChI

1S/O5P2.H3O4P/c1-2-7-4-3-6(1)5-7;1-5(2,3)4/h;(H3,1,2,3,4)

InChI key

FVYIVXLIMHNYTD-UHFFFAOYSA-N

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일반 설명

Polyphosphoric acid (PPA) is widely employed as acylation and alkylation reagent in various reactions. It is a strong mineral acid with excellent dehydrating properties.

애플리케이션

Polyphosphoric acid may be used in the synthesis of aromatic sulfones, N-substituted amides and 4-aminobenzophenones. It may also be used in dehydration, Fischer-Indole Synthesis, Beckmann Rearrangement and Schmidt Rearrangement reactions. It can be used as a catalyst in the synthesis of various aromatic ketones.
PPA may be used as a catalyst during the synthesis of dimethyl carbonate (DMC) from urea and methanol. It also acts as an absorbent for the ammonia generated in the process. PPA may be used to prepare silica-supported polyphosphoric acid (PPA-SiO2), an easy to handle, reusable heterogenous catalyst.

기타 정보

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

픽토그램

Corrosion

신호어

Danger

유해 및 위험 성명서

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1


시험 성적서(COA)

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문서 라이브러리 방문

이미 열람한 고객

Silica-supported polyphosphoric acid (PPA-SiO2): An efficient and reusable heterogeneous catalyst for ecofriendly organic synthesis.
Vekariya RH, et al.
Synthetic Communications, 46(3), 197-219 (2016)
906. Synthetic uses of polyphosphoric acid.
Denton DA and Suschitzky H.
Journal of the Chemical Society, 4741-4743 (1963)
Synthesis of dimethyl carbonate from urea and methanol using polyphosphoric acid as catalyst.
Sun J, et al.
J. Mol. Catal. A: Chem., 239(1), 82-86 (2005)
Meng-Yang Chang et al.
Organic letters, 14(9), 2198-2201 (2012-04-21)
A straightforward synthesis of 3,8-dimethoxy-10,11-dihydrobenzo[j]fluoranthen-12-ones 1 is reported in a seven-step route from biphenyl-4,4'-diol 2 via the transformation of a double Claisen rearrangement, cross metathesis with ethyl acrylate, and polyphosphoric acid (PPA)-promoted Friedel-Crafts electrophilic benzannulation in good yields.
Stanimir Manolov et al.
Molecules (Basel, Switzerland), 18(2), 1869-1880 (2013-02-05)
We report herein an application of an α-amidoalkylation reaction, as an alternative efficient synthesis of 4-aryl- and 4-methyl-1,2,3,4-tetrahydroisoquinoline derivatives. The amides required for this purpose would result from reaction of aminoacetaldehyde dimethylacetal with different substituted benzenes in polyphosphoric acid, followed

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