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Sodium Tripolyphosphate/STPP 99% Industrial Grade White powder

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CAS No.:

7758-29-4

Grade:

Industrial Grade

Content:

99%

Port:

Port of Qingdao

Packaging:

25kg/bag 25MT/20fcl

Price valid (until):

2023-03-31

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Shandong Lingnuo chemical Co., Ltd

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Melamine,ethyl acetate,maleic anhydride,acetic acid,tetrahydrofuran,butyl acetate

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Product Description
Seller Information
Inquiry History

Description

Sodium Tripolyphosphate/STPP

Sodium tripolyphosphate, is a kind of inorganic compound, chemical formula Na5P3O10, is a kind of amorphous water-soluble linear polyphosphate, often used in food, as water retention agent, quality improver, pH regulator, metal chelating agent.

White powder, melting point 622℃. Easily soluble in water, its aqueous solution is alkaline, 1% aqueous solution pH is 9.7. It gradually hydrolyzes in water to form orthophosphate. It can coordinate with calcium, magnesium, iron and other metal ions to form soluble complexes.

Polyphosphate is one of the earliest, most widely used and most economical corrosion inhibitors for cooling water. Besides being used as corrosion inhibitor, polyphosphate can also be used as scale inhibitor. Using polyphosphate alone, when the pH value is 6.O ~ 7.O, the use concentration is 20 ~ 40mg/L, when the pH value is 7.5 ~ 8.5, the general use concentration is 10 ~ 20mg/L. In order to improve the corrosion inhibition effect and reduce the amount of polyphosphate, it is usually combined with zinc salt, molybdate, organophosphate and other corrosion inhibitors. The formula of phosphorus system requires a certain concentration of calcium ions in the cooling water. From the perspective of corrosion inhibition, it should not be less than 30mg /L (CaCOa), and the dissolved oxygen in water should be more than 2mg/L, which can be met by the open circulating cooling water system. Polyphosphate is suitable for water temperature below 50℃. Don't stay in the water for too long. Otherwise, phosphate hydrolysis to orthophosphate will increase the tendency to produce phosphate scale.

Items	Specifications
English alias	poly STPP armofos empiphosstp-d freez-gardfp19 Sodium Tripolyphos Sodium triphosphate Pent-sodium Phosphate natriumtripolyphosphat SODIUM TRIPOLYPHOSPHATE Sodium Tripolyphosphate Sodium Phosphate Tripoly pentasodium triphosphate Pentasodium Tripolyphosphate Food Grade Sodium Tripolyphosphate Triphosphoric acid, pentasodium salt
CAS	7758-29-4
chemical formula	Na5O10P3
molecular weight	367.86
density	2.52 g/cm3 (20℃)
melting point	622 °C
water solubility	20 g/100 mL (20 ºC)
vapour pressure	<0.1 hPa (20 °C)
solubility	H2O: may be clear to slightly hazy
PH value	9.0-10.0 (25℃, 1% in H2O)
storage condition	Storage temperature: no restrictions.
stability	Stable. Incompatible with strong oxidizing agents, strong acids. Hygroscopic.
sensibility	Hygroscopic
appearance	Powder Solid
colour	White
smell	Odorless
physico-chemical property	White powder. Easily soluble in water, its aqueous solution is alkaline.
product use	Polyphosphate is one of the earliest, most widely used and most economical corrosion inhibitors for cooling water. Besides being used as corrosion inhibitor, polyphosphate can also be used as scale inhibitor. Using polyphosphate alone, when the pH value is 6.O ~ 7.O, the use concentration is 20 ~ 40mg/L, when the pH value is 7.5 ~ 8.5, the general use concentration is 10 ~ 20mg/L. In order to improve the corrosion inhibition effect and reduce the amount of polyphosphate, it is usually combined with zinc salt, molybdate, organophosphate and other corrosion inhibitors. The formula of phosphorus system requires a certain concentration of calcium ions in the cooling water. From the perspective of corrosion inhibition, it should not be less than 30mg /L (CaCOa), and the dissolved oxygen in water should be more than 2mg/L, which can be met by the open circulating cooling water system. Polyphosphate is suitable for water temperature below 50℃. Don't stay in the water for too long. Otherwise, phosphate hydrolysis to orthophosphate will increase the tendency to produce phosphate scale.
security	Sodium tripolyphosphate is mildly irritating to the skin and mucous membrane and can cause severe diarrhea if inhaled or ingested into the body. Production and use of sodium tripolyphosphate staff wear protective equipment, production workshop should be installed with air supply and exhaust equipment. Should be stored in a cool, ventilated, dry warehouse, do not stack in the open air. Do not make moisture deterioration, prevent high temperature, prevent harmful pollution. Handle with care during loading and unloading to prevent packing damage.

聚磷酸盐是使用最早、最广泛，而且最经济的冷却水缓蚀剂之一。聚磷酸盐除了作为缓蚀剂使用外，还可作为阻垢剂使用。单独使用聚磷酸盐，在pH值为6．O～7．O时，使用浓度为20～40mg/L，在pH值为7.5～8.5时，一般使用浓度为10～20mg/L。为了提高缓蚀效果和降低聚磷酸盐的用量，通常与锌盐、钼酸盐、有机磷酸盐等缓蚀剂配合使用。磷系配方要求冷却水中应有一定浓度的钙离子。从缓蚀角度考虑不宜小于30mg／L（以CaCOa计），水中溶解氧要求在2mg/L以上，敞开式循环冷却水系统可以满足这一要求。聚磷酸盐适用于50℃以下的水温。在水中停留时间不宜太长。否则，乘磷酸盐水解生成正磷酸盐，会增加产生磷酸盐垢倾向。

Basic Info

Product Name:

Sodium tripolyphosphate

Other Name:

Triphosphoric acid,sodium salt (1:5);Triphosphoric acid,pentasodium salt;Pentasodium triphosphate;Sodium tripolyphosphate (Na5P3O10);Sodium triphosphate (Na5P3O10);Sodium triphosphate;Pentasodium tripolyphosphate;Armofos;Polygon;Pentasodium tripolyphosphate (Na5P3O10);Pentasodium triphosphate (Na5P3O10);Sodium phosphate (Na5P3O10);Sodium tripolyphosphate;Thermphos;S 400;Thermphos L 50;Thermphos N;Thermphos SPR;STPP;Empiphos STP-D;Freez-Gard FP 19;Sodium polyphosphate (Na5P3O10);Rhodiaphos LV;STP;S 400 (phosphate);Thermphos NW;Rhodiaphos H 5;Rhodiaphos HPA 3.5;Nutriphos 0-88;Albriphos 50F;Rhodiaphos A 4010;Rhodiaphos A 70HG;Rhodiaphos C 90H;Rhodiaphos C 90S Blue TX;Polypray H;L 2209;Tripolyphosphate soda;Thermphos L 500;Wandetto B;Polypray STPP;Sodium metaphosphate oxide (Na5(PO3)3O);E 451i;STPP 20E;Phosphorus sodium oxide (P3Na5O10);Na5P3O10;T 5633;9010-08-6;187620-23-1;860389-18-0;1350716-07-2;1610338-39-0;2093160-08-6;2247930-54-5;2640487-48-3

CAS No.:

7758-29-4

Molecular Formula:

H5O10P3.5Na

InChIKeys:

InChIKey=BQIXQQXTKTZDGC-UHFFFAOYSA-N

Molecular Weight:

367.86400

Exact Mass:

367.81900

EC Number:

618-452-8

UNII:

9SW4PFD2FZ

ICSC Number:

1469

DSSTox ID:

DTXSID9036307

Color/Form:

White powder|Two crystalline forms of anhydrous salt (transition point 417 °C)

HScode:

2835319000

Categories:

Inorganic Salts

Characteristics

PSA:

214.40000

XLogP3:

1.4964

Appearance:

White powder

Density:

2.52 g/cm³

Melting Point:

622 °C

Water Solubility:

H2O: 20 g/100 mL (20 ºC)

Storage Conditions:

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

Vapor Pressure:

<0.1 hPa (20 °C)

Toxicity:

LD50 orally in rats: 6.50 g/kg (Smyth)

PH:

Between 9,1 and 10,2 (1 % solution)

Experimental Properties:

With prolonged heating of sodium tripolyphosphate soln, it tends to revert to the orthophosphate.|Hygroscopic|Its properties are between those of tetrasodium pyrophosphate & sodium metaphosphate.|TRIPOLYPHOSPHATE @ 20 MG/L DOES NOT AFFECT SMELL, TASTE & ACTIVE REACTION (PH) OF WATER. LIMITING PROPERTY IS TURBIDITY AT 5 MG/L ON HEATING.|Forms stable hydrates.

See More Sodium tripolyphosphate Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

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

Dry. Well closed.

See More Sodium tripolyphosphate Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Melamine,ethyl acetate,maleic anhydride,acetic acid,tetrahydrofuran,butyl acetate

Location:
Room 21-1, 14th floor, Zone (A), Guangrao City Commercial Complex, Quanfu Yuan, Guangrao County, Dongying City, Shandong Province

Payment Terms:
TT against copy of documents,L/C

Average lead Time:
20

Total Annual Revenue:
$50 million-$100 million

Total Employees:
51-100

Year of Establishment:
2018

Shandong Lingnuo chemical Co.,Ltd is located in Dongying City, Shandong Province, export more than ten years It is mainly exported to Africa, Asia,Middle East,South America , mainly delaing with product tetrahydrofuran, Melamine, Methylene chloride, aniline oil, Dimethyl Formamide,Acetic acid, Isopropyl Alcohol, Maleic anhydride,Methyl Acetate,DMSO, Ethanol and so on.

Inquiry History

41 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Sodium tripolyphosphate	1 MT	Feb 18, 2026
Egypt	sodium tri polyphosphate ceramic grade	25 MT	Apr 15, 2026
Bolivia	Sodium Tripolyphosphate	2000 KG	Mar 20, 2026
Colombia	Sodium Tripolyphosphate	1 20' Fcl	Mar 13, 2026
India	Sodium Tripolyphosphate	5.00 MT	Mar 12, 2026
Philippines	sodium tripolyphosphate	500 KG	Feb 18, 2026
Malaysia	sodium tripolyphosphate	1.00 MT	Nov 5, 2025
United Arab Emirates	Sodium Tripolyphosphate	50.00 KG	Sep 27, 2025
United Arab Emirates	Sodium Tripolyphosphate	500 TON	Jul 29, 2025
Brazil	Sodium Tripolyphosphate	1 20' Fcl	Jul 17, 2025
India	Sodium tripoly phosphate	1000.00 KG	Feb 18, 2025
Russia	tripolyphosphate	1 MT	Feb 7, 2025
Egypt	sodium tripolyphosphate	1 MT	Feb 3, 2025
Cameroon	SODIUM TRIPOLYPHOSPHATE	50 KG	Jan 3, 2025
Yemen	Sodium Tripolyphosphate	5 TON	Dec 30, 2024
India	sodium tripolyphosphate	1000.00 KG	Nov 27, 2024
India	Sodium tripolyphosphate	1500.00 KG	Nov 21, 2024
Egypt	Sodium tripolyphoohate	1.00 20' Fcl	Aug 7, 2024
Ethiopia	sodium tripolyphosphate	1 20' Fcl	Jul 12, 2024
India	sodium tripolyphosphate	200.00 MT	Apr 10, 2024

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