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Quick Details

  • Classification: chemical raw material
  • CAS No.: 13598-36-2
  • Other Names: hydrogen phosphonate
  • MF: H3PO3
  • EINECS No.: 237-066-7
  • Place of Origin: Shandong, China (Mainland)
  • Grade Standard: Agriculture Grade, Industrial Grade, Reagent Grade, Long shelf-life 99% Phosphorous acid h3po3 13598-36-2
  • Purity: 99%
  • Appearance: White Powder
  • Application: Nylon brightening agent
  • Brand Name: sjtd
  • Model Number: 99%min
  • Product name: Long shelf-life 99% Phosphorous acid h3po3 13598-36-2
  • molecular weight: 82
  • melting point: 73 °C
  • boiling point: 200 °C
  • density: 1.651 g/mL at 25 °C(lit.)
  • flash point: 200°C
  • Storage condition: 0-6°C
  • Water solubility: SOLUBLE
  • sensitivity: Air Sensitive & Hygroscopic
  • stability: Stable

Packaging & Delivery

Packaging Details 25kg / 1000kg in woven bag for Long shelf-life 99% Phosphorous acid h3po3 13598-36-2
Delivery Time Shipped in 15 days after payment

Long shelf-life 99% Phosphorous acid h3po3 13598-36-2

  Phosphorous acid


Product Description


Appearance: colorless crystals. Easily soluble in water and alcohol.



1.  Chemical Name:  Phosphorous Acid

2.  Synonyms: Orthophosphorous acid; Phosphonic acid

3.   CAS No.: 13598-36-2

4.   EC No.: 237-066-7

5.  Transportation Info:

Class 8;



6.   Molecular Weight: 81.996

7.   Molecular Formula: H3PO3

8.   Density: 1.6510


9.   Application:

Phosphorous acid is used in synthesis of phosphite salts, plastic stabilizers, pesticides, water-treatment chemicals, phosphite fertilizers for fruits like citrus and orange, vegetables, economic crops etc., cosmetics additives.






Super Class

First Class

content (%) ≥



Phosphate (%) ≤



chloride (%) ≤



Sulphate (%) ≤



Heavy metal (according to Pb %) ≤



Iron (%) ≤



colorless, pure








(1). Phosphorous acid can be used as reducing agent, nylon whitening agent, also used as a sub phosphate raw materials, pesticide intermediates;


(2). Phosphorous acid is the manufacture of phosphite is raw material, manufacturing plastic stabilizer (e.g. two lead phosphite) and organic phosphorus pesticide raw materials.


(3). Phosphorous acid can be used as a stabilizer for polycarbonate. Also used as an antioxidant for nylon 1010.


(4). Phosphorous acid can be used as chemical reagent;


(5). Phosphorous acid can be used as the determination of mercury, gold, silver and lead, reducing agent, acid, copper and cadmium test.


(6). Industrial phosphoric acid is the raw material for the manufacture of plastic stabilizer. Also used in the manufacture of synthetic fiber and sub phosphate.




Packaging & Shipping


Packing details: 25kg / 500kg / 1000kg in woven bag lined with double layer polythene bag.
The packaging should be marked with "CORROSIVE"sign.

Shipping details: we will deliver the goods about 7-16 days after your order.



Company Information


Company Introduction 
Established in 2009, we are a large private chemical enterprise in Jinan combines science, industry and trade. The sales headquarter is located in Jinan, the capital of Shandong Province, where enjoys superior geographic location, convenient transportation and logistics and can provide a variety of high quality chemical products with reasonable price at a high rate of speed.
and our  company is specialized in the R & D, production and marketing of fine chemical products and has gathered a number of competitive chemicals by self-built production base, equity participation and holding and various forms. The products related all kinds of chemical raw materials, pharmaceutical intermediates, pigment and dye intermediates, chemical reagents, food additives, etc. 




Our Services


Our Team 
We are a big family with more experience. Everyone is professional and diligent. We are a collective of love. Our goal is Providing customers with the best service . To cooperate with us will be your best choice!

Our Services
after-sale service: we will also follow the order even when customer has already received the goods, because we gona to make sure the whole process is smooth. on the other hand,as we know there is no perfect product in the world, and we believe that there is always have the space for the improvement of our products, so if you think that there is something that we can do much better, pls contact us freely. we will do what we can do for you. try to be more and more closer to perfect .we will show our full cooperation to you.
Our Customers 
we have established relations with customers all over the world. Our products are deeply trusted by customers. Many customers choose to cooperation with us once more. We hope that you will be our next loyal customer! We are waiting for you all the time !


Why choose us?
1) professional chemical trading company, own cooperative factory 
2) Small samples can provide, more details can be negotiated 
3) Quality assurance and good after-sales service 
4) Competitive price and timely delivery
How to place an order? 
1.  Contact by email or trademanager for specified items
2. Supply sample if necessary ( to be sent by express courier, like TNT, UPS, Fedex, DHL,etc)
3.  Contract signed, 50% deposit in advance or 100% T/T in advance,
4. Arrangements for Commodity Inspection 
5. Balance payment remit
6. Transportation, send the original file
7. Buyer receive the goods ASAP.




 Q1. Are you a factory or trading company ?
A:Yes,we are trading company, but not just a trading company, as we have our own sales team, own cooperated factory,can help buyers to decide which products are their best choice,and all your inquiry will be replyed within 24 hours.

Q2. Could you send me all your catalogues and price list ?
A: As we have lots of items, even 1 item have different size and package, it is really too hard for us to send you all our catalogue and price list for you. Please inform me the items, size and packages you interested in, so we can offer you the price list you want for your reference.

Q3. How can I get some samples ?
A: Kindly send us your address and pay for that courier cost, we are honored to offer you samples.

Q4. What's your Delivery Time ?
A: In generally, the delivery time is 7 days -16 days. We will make the delivery as soon as possible with the guaranted quality.

Q5. What is the convenient way to pay ?
A: L/C, T/T, Western Union are accepted, and if you have better idea , please feel free to share with us.

Q6. Which mode of transport would be better ?
In general, we advice to make delivery by sea which is cheap and safe. Also we respect your views of other transportation as well.


Pls contact me if you are interested in our product, thank you and best wishes~












Transaction History of the Supplier

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Transaction Overview


Transaction Details

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China (Mainland) | Trading Company
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Supplier Assessments:
8 Transactions 4,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $31,000
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