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214906

Sigma-Aldrich

Hypophosphorous acid solution

50 wt. % in H2O

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Synonym(s):
Phosphinic acid
Linear Formula:
H3PO2
CAS Number:
Molecular Weight:
66.00
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor pressure

<17 mmHg ( 20 °C)

Quality Level

form

liquid

concentration

48-52% in NaOH (titration)
50 wt. % in H2O

pH

1 (20 °C, 500 g/L)

density

1.206 g/mL at 25 °C

SMILES string

O[PH2]=O

InChI

1S/H3O2P/c1-3-2/h3H2,(H,1,2)

InChI key

ACVYVLVWPXVTIT-UHFFFAOYSA-N

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This Item
438081695017200956
Phosphoric acid ACS reagent, &#8805;85&#160;wt. % in H2O

Sigma-Aldrich

438081

Phosphoric acid

Phosphoric acid ACS reagent, &#8805;85&#160;wt. % in H2O

Sigma-Aldrich

695017

Phosphoric acid

form

liquid

form

liquid

form

liquid

form

liquid

concentration

48-52% in NaOH (titration), 50 wt. % in H2O

concentration

≥85 wt. % in H2O

concentration

≥85 wt. % in H2O

concentration

~55 wt. % in H2O

pH

1 (20 °C, 500 g/L)

pH

-

pH

-

pH

-

density

1.206 g/mL at 25 °C

density

1.685 g/mL at 25 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

density

1.651 g/mL at 25 °C

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

-

General description

H3PO2, a monobasic oxyacid, is also referred to as phosphinic acid. H3PO2 participates as a reducing agent for the conversion of aromatic and aliphatic diselenides to the corresponding selenols.
It undergoes oxidation in the presence of Ce(IV) and a strong acid to afford cerium(IV) hypophosphite complex ions.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Hypophosphorous Acid, a Novel Reagent for the Reduction of Diselenides and the Selenol-Catalyzed Reduction of Disulfides1,2.
Gunther WHH.
The Journal of Organic Chemistry, 31(4), 1202-1205 (1966)
Enzheng Shi et al.
ACS nano, 13(2), 1635-1644 (2019-03-01)
Edges of two-dimensional (2D) halide perovskites are found to exhibit unusual properties such as enhanced photoluminescence lifetime and reduced photoluminescence emission energy. Here, we report the formation mechanism and the dynamic nature of edge states on exfoliated 2D halide perovskite
The Kinetics and Mechanism of the Oxidation of Hypophosphorous Acid by Cerium (IV) in Perchloric Acid Solution.
Carroll RL and Thomas LB.
Journal of the American Chemical Society, 88(7), 1376-1381 (1996)
Shibin Deng et al.
Nature communications, 11(1), 664-664 (2020-02-02)
Two-dimensional hybrid organic-inorganic perovskites with strongly bound excitons and tunable structures are desirable for optoelectronic applications. Exciton transport and annihilation are two key processes in determining device efficiencies; however, a thorough understanding of these processes is hindered by that annihilation
Hongyan Liang et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 7(8), 1903213-1903213 (2020-04-25)
Perovskite-based light-emitting diodes (PeLEDs) are now approaching the upper limits of external quantum efficiency (EQE); however, their application is currently limited by reliance on lead and by inadequate color purity. The Rec. 2020 requires Commission Internationale de l'Eclairage coordinates of

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