Hypophosphorous Acid 50 wt.% Solution 500 grams

Hypophosphorous Acid 50 wt.% Solution 500 grams

Part Number:
Lead Time:
2-3 weeks
Free Shipping on most orders*
Bulk Pricing:
Buy in bulk and save
500 gram


Due to a dramatic reduction in supply, stock numbers cannot be guaranteed. All purchases will be followed by an order confirmation with estimated ship date and you will be notified if stock is unavailable. All orders for healthcare products placed after January 24, 2020 are non-cancellable and non-returnable. Thank you for your continued cooperation and partnership.

Hypophosphorous Acid 50 wt. % Solution 500 Gram

Synonym: Phosphinic acid

  • CAS Number 6303-21-5
  • Linear Formula H3PO2
  • Molecular Weight 66.00
  • MDL number MFCD02183592
  • PubChem Substance ID 329752159


vapor pressure <17 mmHg ( 20 °C)



1.206 g/mL at 25 °C

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.

Safety Information


Signal word Warning
Hazard statements H315-H319-H335
Precautionary statements P305 + P351 + P338
RIDADR NONH for all modes of transport
WGK Germany 1
RTECS TS7750000


Safety Data Sheet


Note: These chemicals are for research & laboratory use only. Your order will not be processed if you do not work for, and ship to, a registered laboratory or research facility. Not for topical applications. An official Declaration of Use form may be required.

Most chemicals cannot be expedited.

This item has a Haz-Mat shipping fee built into the price. Fee is applicable only to the first item purchased. Additional HazMat items will be discounted automatically in the shopping cart. HazMat items always require special DOT handling and in rare cases may incur additional fees not levied prior to checkout. Request a quote for the most accurate pricing.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. Prop 65 Warning

Please note: This product is not returnable.

Related Products

Tetrafluoroboric Acid 48% Solution 500 grams
Part #: MIL-207934-500G

$138.00 $109.30

Hypophosphorous Acid 50 wt.% Solution 4 kg
Part #: MIL-214906-4KG

$553.00 $475.70

Hypophosphorous Acid 50 wt.% Solution 4 kg, case/4
Part #: MIL-214906-4X4KG

$1,331.00 $1,173.20

Peracetic Acid 32 wt% Solution 500 mL (Hazmat)
Part #: MIL-269336-500ML


Hydrogen Bromide Solution 33 Wt.% in Acetic Acid 500 ml
Part #: MIL-248630-500ML

$210.00 $171.80

Customers Also Viewed

Hypophosphorous Acid 50 wt.% Solution 4 kg
Part #: MIL-214906-4KG

$553.00 $475.70

Phosphorous Acid 99% 2 kg
Part #: MIL-215112-2KG

$259.00 $224.20

Hypophosphorous Acid 50 wt.% Solution 4 kg, case/4
Part #: MIL-214906-4X4KG

$1,331.00 $1,173.20

Phosphorous Acid 99% 2 kg, case/4
Part #: MIL-215112-4X2KG

$779.00 $663.30

Ammonium Chloride ACS Reagent, 99.5%+ 500 grams, case/6
Part #: MIL-213330-6X500G

$295.00 $253.40

Product Reviews