Premium Grade Phosphorous Acid for Sale, CAS No. 13598 -36-2

Model NO.
CAS No. 13598-36-2
EINECS
237-066-7
Classification
Phosphorous Acid
Appearance
Crystal
Grade Standard
Agriculture Grade
Acid Strength
Strong Acid
Kind
Inorganic Acid
Quality
Tech Grade
Packaging
Paper Bag
Element
Polyatomic Acid
Oxidation
Oxidizing Acid
Volatility
Volatile Acid
Stability
Stabilized Acid
Transport Package
Customized
Specification
Phosphorous Acid
Trademark
Chenghexin
Origin
China
HS Code
2811199090
Production Capacity
Over 500 Tons/Year
Reference Price
Please contact us for quote
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Product Description

Product Description

 

Names
IUPAC name
Phosphonic acid
Systematic IUPAC name
Phosphorous acid
Other names
Dihydroxyphosphine oxide

Dihydroxy(oxo)- λ 5 -phosphane
Dihydroxy- λ 5 -phosphanone
Orthophosphorous acid
Oxo- λ 5 -phosphanediol
Oxo- λ 5 -phosphonous acid

Metaphosphoroic acid
 
Identifiers
CAS Number
  • 13598-36-2  
3D model (JSmol)
  • Interactive image
  • Interactive image
ChEBI
  • CHEBI:44976  
ChEMBL
  • ChEMBL1235291
ChemSpider
  • 10449259  
ECHA InfoCard 100.033.682 
EC Number
  • 237-066-7
Gmelin Reference
1619
KEGG
  • C06701  
PubChem CID
  • 107909
RTECS number
  • SZ6400000
UNII
  • 35V6A8JW8E  
UN number 2834
CompTox Dashboard (EPA)
  • DTXSID2049715 
 
Properties
Chemical formula
H 3 PO 3
Molar mass 81.99 g/mol
Appearance white solid
deliquescent
Density 1.651 g/cm 3  (21 °C)
Melting point 73.6 °C (164.5 °F; 346.8 K)
Boiling point 200 °C (392 °F; 473 K) (decomposes)
Solubility in water
310 g/100 mL
Solubility soluble in ethanol
Acidity (p K a ) 1.1, 6.7
Magnetic susceptibility (χ)
−42.5·10 −6  cm 3 /mol
Structure
Molecular shape
pseudo-tetrahedral
Hazards
Occupational safety and health  (OHS/OSH):
Main hazards
skin irritant
GHS  labelling
Pictograms
 
Signal word
Danger
Hazard statements
H302, H314
Precautionary statements
P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P405, P501
Related compounds
H 3 PO 4  (i.e., PO(OH) 3 )
H 3 PO 2  (i.e., H 2 PO(OH))
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 
Uses

 

Phosphorous acid, H3PO3, is a versatile chemical with several important applications across various industries. 

Agriculture  Phosphorous acid and its salts, such as phosphonates, are widely used as fungicides and plant nutrients. They help in protecting crops against fungal infections and also play a role in stimulating plant growth by enhancing their natural defense mechanisms.

Chemical Synthesis   In the chemical industry, phosphorous acid serves as a reagent or intermediate in the synthesis of other phosphorous-containing compounds. It's utilized in the production of phosphite salts and esters, which have applications ranging from flame retardants to plasticizers and stabilizers.

Water Treatment    Phosphorous acid and its derivatives are used in water treatment processes. They can function as scale inhibitors and corrosion inhibitors in cooling systems and boilers, helping to protect metal surfaces and maintain system efficiency.

Metal Treatment    In the metal industry, phosphorous acid is used in the pretreatment and finishing of metals. It's involved in processes such as phosphating, which enhances the adhesion of paint and improves rust resistance on metal surfaces.

Plastics and Polymers    As a stabilizer, phosphorous acid and its compounds help to prevent the degradation of plastics and polymers during processing and usage, extending the life of these materials.

Pharmaceuticals and Biotechnology  In pharmaceutical synthesis, phosphorous acid can be a key intermediate in the production of certain drugs and biologically active molecules. It's used to introduce phosphorus-containing groups into organic molecules.
 
Premium Grade Phosphorous Acid for Sale, CAS No. 13598-36-2
 
Why Choose Us

 

Over Two Decades of Expertise  Leverage our extensive 22+ years of experience to guide every phase of your order, ensuring a seamless and worry-free process.

Comprehensive Order Supervision   From the moment you reach out to us, every step of your order is meticulously supervised to alleviate any concerns you might have.
   --Engage with our dedicated sales team for swift responses within 12 hours.
   --Gain clarity on quality, price, payment terms, packaging, and delivery timelines to facilitate your decision-making.
   --Shipping information is promptly shared on the departure day.
   --Stay informed at each stage until the successful receipt of your shipment.

Expert Loading Report Services   An external team meticulously inspects loading operations to ensure everything is in perfect order, backed by a detailed Loading Report for each shipment, with prior samples available upon request.

Unbeatable Pricing   Our profound industry insight, coupled with strong partnerships with select manufacturers, enables us to offer the most competitive prices.

Quality Assured Products   We only approve products that meet the highest international standards and regulations.

Strategic Warehouse Solutions   With our warehouse services, we ensure a stable supply for our clients, buffering against the volatility of material prices.
 
FAQ

 

1. Can I get samples?
Yes, free samples are available. 
Samples will usually be sent out within 1-3 working days.

2. Do you accept customized orders?
Yes, both product and package can be customized.
 
3. What is the payment terms?
TT, LC, DP are available.
Please note that OME orders require payment prior to shipment.

4. What is the lead time for mass production?
Delivery time depends on product type and quantity.
Our company has a digital ordering system to ensure scientific and reasonable scheduling of orders, please consult the sales staff you contacted.

5. How to guarantee the product quality?
We have a complete raw material inspection, quality control and pre-factory inspection system to ensure that the order delivered to you is in line with the contract.
In addition, it also supports third-party inspection before shipment. If the inspection fails, the customer's payment will be refunded, and the loss caused by the breach of contract will be compensated.

6. How to check the order status after payment?
After the order is confirmed, the merchandiser will follow up every week and update the order status to you by email.

7. How to deal with after-sales problems?
The after-sales service implements the order responsibility system, and the salesman is the first responsible person for the order. The after-sales service department will set up a service team after receiving the complaint. They will complete the incident investigation and provide you with a resolution within 72 hours.
 
Company Profile

 

Sincere Industries Co., Ltd., established in 2025, is located in the Huarun Mansion, Longhua District, Haikou City, Hainan Province, boasting a brand-new, ultra 5A-level office environment. Based on the profound corporate culture of Shijiazhuang Chenghexin Chemical, which has more than 20 years of experience, the company fully supports the development of import and export-related businesses for its Hainan branch. The company has a harmonious atmosphere, generous benefits, and offers substantial room for growth.

Since its inception, the company has always adhered to the development philosophy of "integrity, stability, innovation, and precision". It continuously explores and innovates, enhancing the R&D and production capabilities of new products. The company's products are constantly optimized and perfected, and it maintains long-term stable cooperation with domestically powerful factories as well as national and provincial scientific research institutes. This ensures that the products' technology is advanced, quality is stable, and prices are competitive, now forming a professional chemical raw material supply enterprise that combines science, industry, and trade with both domestic and international trade.

In recent years, the company has won several national and provincial awards and titles for being a trustworthy enterprise and has been recognized as a quality and efficiency-oriented enterprise. It has also received accolades and recommendations from internet companies like Baidu, and HC; particularly, it has been featured in a special interview and promotion by the CCTV Securities Information Channel's "Brand Power" program.

After more than 20 years of efforts, the company has continued to grow and expand. Its client base includes highly influential local enterprises, listed companies, and Fortune 500 companies, earning long-term trust and support from both new and old customers. With a bright future ahead, all employees are confident in the company's development.
 

 

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