Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

214906

Sigma-Aldrich

Hypophosphorous acid solution

1 of 1 reviewers took part in a promotion

50 wt. % in H2O

Synonym(s):

Phosphinic acid

Sign Into View Organizational & Contract Pricing

Select a Size

100 G
$54.63
500 G
$93.11
4 KG
$653.00
4 X 4 KG
$1,610.00

$54.63

List Price$64.50Save 15%
Web-Only Promotion

In StockDetails


Request a Bulk Order

Select a Size

Change View
100 G
$54.63
500 G
$93.11
4 KG
$653.00
4 X 4 KG
$1,610.00

About This Item

Linear Formula:
H3PO2
CAS Number:
Molecular Weight:
66.00
MDL number:
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.21

$54.63

List Price$64.50Save 15%
Web-Only Promotion

In StockDetails


Request a Bulk Order

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

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
20095613-2620438081
concentration

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

concentration

~55 wt. % in H2O

concentration

30.0-32.0% in H2O

concentration

≥85 wt. % in H2O

Quality Level

200

Quality Level

100

Quality Level

-

Quality Level

200

form

liquid

form

liquid

form

liquid

form

liquid

pH

1 (20 °C, 500 g/L)

pH

-

pH

-

pH

-

vapor pressure

<17 mmHg ( 20 °C)

vapor pressure

-

vapor pressure

-

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

density

1.206 g/mL at 25 °C

density

1.651 g/mL at 25 °C

density

-

density

1.685 g/mL at 25 °C (lit.)

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.[1]
It undergoes oxidation in the presence of Ce(IV) and a strong acid to afford cerium(IV) hypophosphite complex ions.[2]

Application


  • Synthesis of Aminobisphosphinates through a Cascade Reaction between Hypophosphorous Acid and Bis(trimethylsilyl)imidates Mediated by ZnI(2).: This research presents a novel method for synthesizing aminobisphosphinates, utilizing hypophosphorous acid in a zinc iodide-mediated cascade reaction, which could be relevant in the development of new chemical entities in medicinal chemistry (Ayadi et al., 2023).

  • Facile Synthesis of Liquid Crystal Dimers Bridged with a Phosphonic Group.: This study explores the use of hypophosphorous acid in the synthesis of phosphonic group-bridged liquid crystal dimers, offering potential advancements in materials science and display technologies (Wang et al., 2022).

  • Oxidation of Hypophosphorous Acid by a Ruthenium(VI) Nitrido Complex in Aqueous Acidic Solution. Evidence for a Proton-Coupled N-Atom Transfer Mechanism.: Investigates the mechanistic details of hypophosphorous acid oxidation by a ruthenium complex, shedding light on reaction pathways important in catalysis and synthesis (Li et al., 2022).

  • Solution-processed Ge(ii)-based chalcogenide thin films with tunable bandgaps for photovoltaics.: Discusses the application of hypophosphorous acid in the development of germanium-based chalcogenide thin films, contributing to advancements in photovoltaic materials (Hu et al., 2022).

  • One-Pot Synthesis and in Silico Molecular Docking Studies of Arylselanyl Hydrazides as Potential Antituberculosis Agents.: Utilizes hypophosphorous acid in the one-pot synthesis of arylselanyl hydrazides, evaluated for their potential as antituberculosis agents through molecular docking studies (Borges et al., 2022).

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

1 of 1 reviewers took part in a promotion

Active Filters

  1. Melito di Porto Salvo (RC) - Italy
    • Reviews 2
    • Votes 2
    5 out of 5 stars.

    Quality

    Perfect quality and purity. Good price and fast shipping

    Helpful?

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service