All Products
-
Ahmed KhanI'm a trader from Pakistan. I have bought sodium hempetaphosphate with Manager Hu and worked with him for 3 times. THKs Hu, now I have become a local agent. Riel Chemical is indeed a trusted partner. Highly recommended for friends who need high quality chemical products.
-
Maria J GarciaOverall, I was impressed. Whether it is product details or service response speed, it is done very well, and customers are satisfied. Warmly tips: Could you guys add more payment methods?that would be great.
-
LabrekeoLa vitesse de livraison est très satisfaisante et presque aucune inquiétude. Chaque fois que la coopération fonctionne sans à-coup. Recommandez sincèrement à d’autres acheteurs!
-
محمد لاگولدشریک خوب، پیدا کردن چنین تامین کننده ای عالی است، برای شما آرزوی موفقیت دارم
-
JackThe cooperation with Riel Chemical Co., Ltd. is our most sensible choice. Your team's efficiency, professionalism and innovative spirit are impressive, and we are looking forward to further cooperation in the future! -- Jack Sales manager
-
ອາ ລິ ສໄປ ຈົນ ສຸດ ຂີດ, ຂອບ ໃຈ ຫລາຍໆ ທີ່ ມີ ທ່ານ! ບໍ່ ວ່າ ຈະ ເປັນ ການ ສະຫນັບສະຫນູນ ຢ່າງ ເຕັມທີ່ ໃນ ເວລາ ທີ່ ສໍາຄັນ ຫລື ການ ເອົາ ໃຈ ໃສ່ ຢ່າງ ລະມັດລະວັງ ຕໍ່ ລາຍ ລະອຽດ ຂອງ ການ ຮັບ ໃຊ້ ປະຈໍາ ວັນ, ເຮົາ ຮູ້ສຶກ ວ່າ ໄດ້ ຮັບ ຄວາມ ໄວ້ ວາງ ໃຈ. ຂໍ ໃຫ້ ມິດຕະພາບ ຍືນ ຍົງ ຕະຫລອດ ໄປ ແລະ ການ ຮ່ວມ ໄມ້ ຮ່ວມ ມື ຈະ ຍືນ ຍົງ ຕະຫລອດ ໄປ ——[ທີມການຄ້າເຄມີຂອງລາວ]
-
Mr. ZhaoWe have been cooperating with Riel Chemical for five years. The product quality has always been perfect and the usage effect is good. Your company's sales manager is also particularly polite
White Sodium Tripolyphosphate STPP For Antiscale CAS 7758-29-4
Place of Origin | Weifang |
---|---|
Brand Name | Riel Chemical |
Certification | SGS, ISO9001, CE |
Model Number | 96% |
Minimum Order Quantity | 1 ton |
Price | USD 730~800 FOB |
Packaging Details | 25 kg polyethylene woven bag, moisture-proof, easy to transport |
Delivery Time | 3~5 work day |
Payment Terms | T/T , L/C |
Supply Ability | 50 tons per day |

Contact me for free samples and coupons.
WhatsApp:0086 18588475571
Wechat: 0086 18588475571
Skype: sales10@aixton.com
If you have any concern, we provide 24-hour online help.
xProduct Details
CAS | 7758-29-4 | EINECS | 231-838-7 |
---|---|---|---|
Appearance | White Particles Or Powder | Crystalline Hydrate | Water-free |
Another Name | Sodium Triphosphate | Life Span | Two Years |
Available Port | Qingdao Port, Tianjin Port, Shanghai Port, Lianyungang Port, Fujian Port, Guangzhou Port | Fusing Point | 622℃ |
Solubility | H2O: May Be Clear To Slightly Hazy | Density | 2.52 G/cm³ |
Storage Temperature | Store In A Tightly Sealed Container. Store In A Cool, Dry, Well-ventilated Area Away From Incompatible Substances. Avoid Moisture. | ||
Highlight | white sodium tripolyphosphate stpp,white sodium tri poly phosphate,antiscale sodium tripolyphosphate stpp |
You can tick the products you need and communicate with us in the message board.
Mode of loading | Maximum load | |
---|---|---|
20 GP no pallet | 20-22 tons | |
20 GP with pallet | 16 tons |
Product Description
White Sodium Tripolyphosphate STPP For Antiscale CAS 7758-29-4
Product Specifications
Attribute | Value |
---|---|
CAS | 7758-29-4 |
EINECS | 231-838-7 |
Appearance | White particles or powder |
Crystalline hydrate | Water-free |
Another name | Sodium Triphosphate |
Life span | Two years |
Available port | Qingdao Port, Tianjin Port, Shanghai Port, Lianyungang Port, Fujian Port, Guangzhou Port |
Fusing point | 622℃ |
Solubility | H2O: may be clear to slightly hazy |
Density | 2.52 g/cm³ |
Storage temperature | Store in a tightly sealed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Avoid moisture. |
Technical Specifications
Molecular formula: Na5P3O10
Molecular weight: 367.86
Industrial grade: CAS 7758-29-4
Standard: GB/T 9983-2004
Quality Parameters | Standard Value |
---|---|
Main content: sodium tripolyphosphate ≥ | 96.0% |
Phosphorus pentoxide P2O5≤ | 57.0% |
Water insoluble≤ | 0.10% |
Iron ≤ | 0.007% |
Ph Value (1%) | 9.2-10.0 |
Whiteness ≥ | 90 |

Physical and Chemical Properties
- Chemical Formula: Na₅P₃O₁₀
- Molecular Weight: 367.86 g/mol
- Appearance: White crystalline or powdery solid
- Form: Typically exists as an anhydrous compound (Na₅P₃O₁₀) or a hexahydrate (Na₅P₃O₁₀*6H₂O)
- Water Solubility: Highly soluble in water (14 g/100 mL at 20°C, 30 g/100 mL at 60°C)
- Other Solvent: Insoluble in organic solvents (e.g., ethanol)
- Aqueous Solution pH: 9.5-10.5 (1% solution)
- Decomposition Temperature: 622°C (into sodium pyrophosphate and sodium metaphosphate)
- Hydrate Stability: Hexahydrate tends to effloresce in dry air
- Hygroscopicity: Strong; easily absorbs moisture from the air
- Chelating Ability: Forms stable soluble complexes with metal ions (Ca, Mg, Fe)

Applications of Sodium Tripolyphosphate
Industrial Uses
- Detergents and Cleaners: Key component in industrial detergents for machinery, equipment, and hard surface cleaning
- Water Treatment: Scale inhibitor, corrosion inhibitor, and water softening agent
- Textile Industry: Washing aid, bleaching stabilizer, and dyeing auxiliary
- Paper Industry: Dispersant and retention agent for improved paper quality
- Ceramic Industry: Grinding aid and dispersant for ceramic production
- Metal Processing: Cleaning agent and rust inhibitor
- Oil Industry: Drilling fluid additive and oil cleaning agent
- Coatings and Paints: Dispersant and stabilizer


Frequently Asked Questions
What is your payment term?
We can accept T/T and L/C at sight as payment term.
Are you able to deliver on time?
Of course! We specialize in this line for many years, with many customers choosing us because we consistently deliver on time while maintaining top quality.
Do you provide free sample?
Yes, we can provide free samples. You only need to cover the express fee.
How about the price? Can you make it cheaper?
We always prioritize customer benefits. Price is negotiable under different conditions, and we assure you the most competitive pricing.
Can I visit your company and factory in China?
Sure. You are very welcome to visit our company in Weifang, China. (We will arrange airport pickup and drop-off at Weifang Airport)
What if there is a quality problem?
We have a professional and comprehensive after-sales service team to promptly address any issues.
Recommended Products