 Home > Pharmaceutical Intermediates > Bulk Drug Intermediates > Hypophosphorous acid for Sale > Hypophosphorous acid CAS:6303-21-5

Hypophosphorous acid CAS:6303-21-5 buy - large image1

Hypophosphorous acid CAS:6303-21-5 buy - image1

Hypophosphorous acid CAS:6303-21-5 buy - image2

Hypophosphorous acid CAS:6303-21-5 buy - image3

Hypophosphorous acid CAS:6303-21-5 buy - image4

Hypophosphorous acid CAS:6303-21-5

Name: Hypophosphorous acid CAS:6303-21-5
Brand: Orient
SKU: pr2511261476
Price: 2 USD
Availability: InStock

TDS 29 Inquiries

Unit Price: Get Latest Price 

CAS No.:

6303-21-5

Grade:

Industrial Grade

Content:

99%

Port:

SHANGHAI

Brand:

Orient

Packaging:

25kg/bag,500kg/bag, customized

Price valid (until):

2025-12-26

Contact Supplier

 Chat Now

Qingdao Orient Chemical Co.,LTD

Company Type:

Trader

Location:

China

Qualification:

Main Products:

pharmaceutical intermediates,peptides,electronic chemicals

 Visit Store

Product Description
Seller Information
Inquiry History

Description

Hypophosphorous acid Chemical Properties

Melting point	-25 °C
Boiling point	108 °C (759.8513 mmHg)
density	1.206 g/mL at 20 °C(lit.)
vapor pressure	<17 mmHg ( 20 °C)
storage temp.	no restrictions.
solubility	very soluble in H2O, ethanol, ethyl ether
pka	pK1 1.1.
form	hygroscopic crystals or colorless oily liquid
color	Colorless
PH	pKa1= 1.00(25℃)
Water Solubility	SOLUBLE
Merck	13,4894
Stability:	Stable. Incompatible with strong bases. Reacts violently with oxidizing agents, strong bases, mercury (II) nitrate and mercury (II) oxide. Do not heat above 100 C.
InChIKey	GQZXNSPRSGFJLY-UHFFFAOYSA-N
CAS DataBase Reference	6303-21-5(CAS DataBase Reference)
NIST Chemistry Reference	Hypophosphorous acid(6303-21-5)
EPA Substance Registry System	Phosphinic acid (6303-21-5)

Hypophosphorous acid Usage And Synthesis

Outline	Hypophosphorous acid is also known as "hypophosphite" It is colorless oil or deliquescence crystal , it is an important fine chemical product. The main use is as reducing agent for electroless plating, phosphoric prevent discoloration of resins, it can also be used in the esterification reaction catalyst, the refrigerant, in particular for the production of high purity product sodium hypophosphite. There are several methods for preparation, the common industrial method for producing is ion exchange resin method and electrodialysis method. The chemical properties of hypophosphorous acid, uses, toxicity, and production methods are edited by andy of Chemicalbook. (2016-12-04)
Chemical properties	It is deliquescent crystals or colorless oil. Melting point: 26.5℃. The relative density (specific gravity): 1.439 (solid, 19℃). It is soluble in water, ethanol and ether, and it can be mixed in any proportion with water, ethanol, acetone. In the air, it easily deliquesce to syrupy liquid, and the aqueous solution is acidic. Hypophosphorous acid is monobasic acid, in aqueous solution, Hypophosphorous acid is strong acid, Ka = 10-2 (25℃); it is relatively stable at room temperature; disproportionation reaction can proceed at 130℃, decompose into phosphine and phosphorous acid: 2H3PO2=H3PO4+PH3 It has strong reduction, heavy metal salt solution can be restored to metals such as Cu2 +, Hg2 +, Ag +, such as: 4Ag+H3PO2+2H2)=4Ag+H3PO4+4H+ It is weak oxidizer, it can be reduced to phosphine, phosphine when encounters strong reducing agent.
Uses	1. Hypophosphorous acid is used as reducing agent for electroless plating; 2. It can be used to prevent discoloration of phosphoric acid resin; 3. It is used as esterification catalyst, the refrigerant; 4. It is used to produce hypophosphite, sodium salts, manganese salts, iron salts are generally used as nourishing substances; 5. Hypophosphorous acid is used in medicine and as reducing agent, the determination of arsenic, tellurium and separation of tantalum, niobium and other reagents. 6. It is strong reducing agent, It can be used for the preparation of sodium hypophosphite, calcium phosphate and other hypophosphite. 7. It can be used for the plating bath. Pharmaceuticals. reducing agent. general reagents. 8. It is strong reducing agent, it can be used in making sodium hypophosphite, calcium phosphate and other hypophosphite. 9. This product is widely used as reducing agent, Ag, Cu, Ni, Hg and other metals are reduced to the corresponding metal, for the verification of As, Nb, Ta and other reagents, it can be used for the preparation of Na, K, Ca, Mn, Fe and other types of hypophosphite.

Shop Hypophosphorous acid CAS:6303-21-5-Detailed Image 1

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 2

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 3

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 4

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 5

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 6

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 7

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 8

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 9

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 10

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 11

Shop Trimellitic Anhydride C9H4O5 552-30-7-Detailed Image 12

—— Q&A ——

Q1:Do you provide sample?

A: Yes, we can provide free sample, you only need pay the shipping cost.

Q2: What is the lead time?

A: For stock goods, it usually take about 5-7 days by air, 15-30 days by sea,For customized products, the delivery time needs to be confirmed based on the actual situation.

Q3: How can I buy? What is the payment method?

A: You can contract us through Email or you can browse our website:orientchem.cc, we have bank transfer,

A：We attach great importance to after-sales service of our products. If there are any quality issues, please contact us within 30 days of receiving the goods and we will handle returns and exchanges for you.

Certificates

Basic Info

Product Name:

Hypophosphorous acid

Other Name:

HYPOPHOSPHOROUSACID,30%(W/V)SOLUTION;HYPOPHOSPHOROUSACID,50%(W/V)SOLUTION;Hypophosphorus acid: (Phosphinic acid);Hypophosphorus acid, 50% w/w aq. soln.;hypophosphorous;hypophosphorousacid(corrosiveliquid,acidic,inorganic,n.o.s.);Hypophosphorousacid,50%w/waq.soln.;HYPOPHOSPHOROUS ACID SOLUTION 50% AQUEOUS

CAS No.:

6303-21-5

Molecular Formula:

HO2P

InChIKeys:

GQZXNSPRSGFJLY-UHFFFAOYSA-N

Molecular Weight:

63.980501

Exact Mass:

66.00

EC Number:

228-601-5

TSCA:

TSCA listed

DSSTox ID:

DTXSID70162386

Color/Form:

Colorless

HScode:

28111990

Categories:

Bulk Drug Intermediates

Characteristics

Physical Properties:

Colorless deliquescent crystals or oily liquid; sour odor; density 1.493 g/cm3;melts at 26.5°C; boils at 130°C; very soluble in water, alcohol and ether; den-sity of a 50% aqueous solution is 1.13 g/mL.

Density:

1.206 g/mL at 20 °C(lit.)

Melting Point:

-25 °C

Boiling Point:

108 °C (759.8513 mmHg)

Water Solubility:

SOLUBLE

Vapor Pressure:

<17 mmHg ( 20 °C)

Toxicity:

It is non-combustible. But when contacts with the hole H agent, it will cause fire. When meets oxidizing agent, violent reaction and combustion can proceed. When it is heated to high, it can decompose into highly toxic phosphine gas, or even explode. It is corrosive. Hypophosphorous acid is often added into soft drinks, and because it is not absorbed. So the risk is small, but particularly strong hypophosphite hurt gastrointestinal. Accidentally it splashes into the eyes or contacts skin, plenty of water is used to washed. Production operators should wear protective clothing and other protective clothing. Production equipment should be sealed, workshop should be ventilated well.

PH:

pKa1= 1.00(25℃)

PKA:

pK1 1.1.

Air and Water Reactions:

Deliquescent. Water soluble.

Reactivity Profile:

HYPOPHOSPHOROUS ACID decomposes when heated into phosphoric acid and spontaneously flammable phosphine. Is oxidized by sulfuric acid with release of sulfur dioxide and sulfur. Reacts explosively with mercury(II) oxide [Mellor, 1940, Vol. 4, 778]. Reacts violently with mercury(II) nitrate [Mellor, 1940, Vol. 4, 993]. Neutralizes bases in exothermic reactions.

Critical Temperature & Pressure:

no restrictions.

See More Hypophosphorous acid Properties 

Hazard Identification

Classification of the substance or mixture

Corrosive to metals, Category 1

Skin corrosion, Sub-category 1B

Serious eye damage, Category 1

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	H290 May be corrosive to metals H314 Causes severe skin burns and eye damage
Prevention	P234 Keep only in original packaging. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash ... thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P390 Absorb spillage to prevent material damage. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P321 Specific treatment (see ... on this label). P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P317 Get medical help.
Storage	P406 Store in a corrosion resistant/...container with a resistant inner liner. P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Hypophosphorous acid Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
pharmaceutical intermediates,peptides,electronic chemicals

Location:
Room 102, 1st Floor, East Office Building, No. 45 Pengwan Road, Qianwan Bonded Port Area, Qingdao Zone, China (Shandong) Pilot Free Trade Zone

Payment Terms:
100% TT in advance

Average lead Time:
10

Total Annual Revenue:
$10 million-$25 million

Total Employees:
51-100

Year of Establishment:
2024

A reliable supplier is like insurance.

We are mainly specilized in supply of pharmaceutical intermediates, electronic chemicals，food additives, and other fine chemical products.
Integrity is the foundation, quality is life. We would like to work together with you to build a greener and brighter future.

Website: orientchem.cc
Email: scarlett@orientchem.cc
WhatsApp: +86 17753254221

Inquiry History

29 Inquiries

Country	Product	Purchase Quantity	Date Posted
Australia	6303-21-5 Hypophosphorous acid	1 MT	Sep 29, 2023
France	Hypophosphorous acid 99% liquid 6303-21-5	1 MT	Sep 25, 2023
New Zealand	Hypophosphorous acid	1 KG	Mar 4, 2026
Australia	Hypophosphorous Acid	100 L	Feb 24, 2026
New Zealand	Hypophosphorous acid	1 KG	Dec 23, 2025
Australia	Hypophosphorous Acid H3po2 99%	1 KG	Jul 18, 2025
New Zealand	Hypophosphorous Acid	1 MT	Sep 18, 2024
Australia	Hypophosphorous acid	500 L	Sep 2, 2024
Australia	Hypophosphorous Acid	1 KG	Jun 6, 2024
Australia	Hypophosphorus Acid	1 KG	Apr 2, 2024
Canada	Hypophosphorous Acid	1 KG	May 18, 2026
Australia	hypophosphuros acid	500 G	Mar 9, 2026
Russia	Hypophosphorous Acid	500 KG	Mar 28, 2025
Lithuania	Hypophosphorous acid	200 L	Jan 11, 2025
Australia	Hypophosphorous acid	1 KG	Oct 14, 2024
New Zealand	Hypophosphorous Acid	1 MT	Sep 18, 2024
Australia	Hypophosphorous Acid	20 KG	Jun 14, 2024
Australia	Hypophosphorous Acid	20 KG	Jun 13, 2024
Australia	Liquid Hypophosphorous Acid 50%	2 KG	Jan 24, 2024
New Zealand	Hypophosphorous Acid	1 KG	Jan 12, 2024

Go to Page

Post an enquiry for this product

More Choices Find All Products for Sale 

Product Name	Grade / Content	Supplier Name	Details
Phosphinicacid in Blue HDPE Drum	Industrial Grade/	Yancheng Shunda Chemical Industry Co.,Ltd.	Inquiry
Phosphinicacid	Industrial Grade/50	Wuhan hanyewuzhou Chemicals New Material Co., LTD	Inquiry
Phosphinicacid white powder	Industrial Grade/	Changshu New-Tech Chemicals Co., Ltd.	Inquiry
Hypophosphorous acid H3PO2 99% White Powder SAA96325874100 SAA	Food Grade/99	M A M M TRANDING ENTERPRISE	Inquiry
Hypophosphorous acid 50%	/	Conier Chem&Pharma Limited	Inquiry

Hot Related Products



Feedback & Suggestions

Send Message

Thank you for your feedback. If you require further assistance, please contact us by email at info@echemi.com or call us at +86-532-55729510.

Hypophosphorous acid CAS:6303-21-5

Product Description

Seller Information