Sodium Salt/

Sodium Tripolyphosphate

Alias:                  STPP

Formula:           Na5P3O10 

Molecular weight: 367.86

CAS NO.:           7758-29-4

HS Code:           283531900

EINECS:           231-838-7

Appearance:  White granular or powder

Density:           0.35~0.90g/cm3

Melting point: 622℃

  • Product Detail
  • FAQ

1. Soidum Tripolyphosphate Information

Sodium tripolyphosphate has the functions of chelation, suspension, dispersion, peptization, emulsification, pH buffering, etc. It can be used as the main auxiliary agent of synthetic detergent, industrial water softener, tanning pretanning agent, dyeing auxiliary agent, organic synthesis catalyst, pharmaceutical dispersant and food additive, etc.

Technical Standards (GB/T9984-2007)

Item Tech Grade Food Grade
STPP (Na5P3O10), %≥94.094.0
Phosphorus pentoxide (P2O5), %≥57.057.0
Water insoluble, %≤0.100.10
Iron (Fe), %≤0.0070.007
Whiteness, %≥90.090.0
Heavy Metal (as Pb), %≥0.001
Arsenic (As), %≥0.0003
Fluoride (F), %≥0.003
PH value(10g/L Solution)9.2~10.09.2~10.0
Passed ISO9001, ISO14001, OHSAS18001 quality system certification

2. Sodium Tripolyphosphate Application

It is mainly used for synthetic detergent as additive, soap synergist and preventing soap grease from separating out and blooming. There is a strong emulsifying effect on lubricating oil, oil fat and can be used to adjust the PH value of buffer soap solution. What’s more, it is used as dispersant when preparing suspensions in industries, such as industrial water softener, tanning pretanning agent, dyeing assistant, paint, kaolin, magnesium oxide, calcium carbonate, etc. It is used as dispersant for drilling mud and as anti-oil agent in paper industry.

3.Sodium Tripolyphosphate Certification

Passed ISO9001, ISO14001, OHSAS18001 quality system certification
Production patent certificate

4.Sodium Tripolyphosphate Packaging

Double-layer bags lined with polyethylene film are used as inner packaging and plastic woven bags are used as outer packaging, with net content of 25kg and 50kg per bag.

5.Sodium Tripolyphosphate Storage Conditions

Sodium tripolyphosphate shipping in factory

In the process of transportation, prevent rain, not be affected with damp and the packaging is not defaced; Store in a dry and ventilated warehouse.

6. Company Exhibition

The factory was established in 1985 and the Ministry of Foreign Trade was established in 2012. So far, it has developed into a group company integrating scientific research, production, sales, international trade, export and import. In 2021, the group’s sales exceeded 100 million US dollars.

Q: Can I get a free sample before placing an order?
A: Yes, of course.

Q:Ports near factory?
A:Tianjin and Qingdao port. Dear guests, you can specify any port.

Q: The time for deliver our products to Tianjin or Qingdao port?
A: 1-3 days.

Q: How is your after-sales service?
A: If you have any technical or quality problems after receiving the goods, you can always contact us. If the problem is caused by us, we will send you the goods for free or refund your loss.

Q: What is your terms of payment?
A: Payment<=1000USD,100% in advance. Payment >= 1000USD,50% T/T in advance, balance before shippment.

Q: Are you trading company or manufacturer?
A: We are a factory, which will give you a favorable price.