What is the physical appearance of STPP?

STPP appears as a white powder with a bulk density of 0.9-1.15 g/ml and whiteness of 85% min.

What is the recommended dosage in detergent?

The usual dosage of STPP in detergent systems is approximately 10-35%.

STPP Series Pent-Sodium Phosphate for Washing Powder

Name: STPP Series Pent-Sodium Phosphate for Washing Powder
Brand: LK (NANJING) CO., LTD.
SKU: 1999980025

Jiangsu, ChinaLK (NANJING) CO., LTD.

US$699.00-1,299.00

24 Tons

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

CAS No.

7758-29-4

Formula

Na5P3O10

Model NO.

22011

EINECS

231-838-7

Certification

ISO

Purity

94.0 min

Type

Sodium Tripolyphosphate

Grade Standard

Industrial Grade

Application

Detergent industry

Molecular Weight

367.86

PH value

9.2~10.3

Shelf Life

24 months

Transport Package

PP Bag with PE Liner

Specification

25/1200kg

Trademark

RAWCHEM

Origin

China

HS Code

28353190

Production Capacity

100,000 t/a

Key features

High Purity Industrial Grade: Purity of Na5P3O10 is 94.0% min, meeting strict industrial standards.

Effective Water Softening: Reacts with Ca2+, Mg2+, Fe3+ ions to soften hard water in detergent systems.

Multi-Industry Application: Used in detergent, food, paper, oil drilling, ceramics, mining, and water treatment.

Anti-Caking Properties: Absorbs moisture to become hexahydrate, keeping detergent powder dry and free-flowing.

Stable Supply Chain: Global sourcing with over 60% of China's STPP export volume from RAWCHEM.

Long Shelf Life: Real shelf life exceeds 2 years when stored in sealed bags away from moisture.

Versatile Phase Options: Available in Phase 1 (10-60%) and Phase 2 (80%) to suit different production needs.

ISO Certified Quality: Product is ISO certified with EINECS 231-838-7 and detailed chemical specifications.

Company profile

High Repeat Buyers ChoiceQuality AssuranceDigital Management EnterpriseYears of Export Experience

LK (NANJING) CO., LTD.

Jiangsu, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-06-04Nearest Port: shanghai ,ningbo ,qingdao ,tianjinAverage Response Time: ≤11.50hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

About Our Factory & Business Background

Address3310, 2north Zhongshan Road, Nanjing, Jiangsu, China

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsSodium Lauryl Ether Sulfate (SLES), Linear Alkyl Benzene Sulphonic Acid (LABSA), Sodium Polyacrylate, Ethylene Diamine Tetraacetic Acid (EDTA), Modified Sodium Disilicate (Msd), Active Poly Sodium Metasilicate (Apsm), Sodium Silicate Powder/ Lumps, Potassium Silicate Powder, Mono Penta-Erythritol, Detergent Beads (Laundry Pods)

Our Industry Experience & Global Business Record

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Product Q&A

Q:What is the purity of STPP?

The purity of Na5P3O10 is 94.0% min, with P2O5 content at 56.5% min.

Q:What are the main applications of STPP?

It is used as a water softener in detergents, a quality modifier in food, and a dispersing agent in oil drilling, paper making, and water treatment.

Q:How does STPP function in detergent?

It softens hard water by reacting with metal ions, enhances emulsifying power, buffers pH to 9-9.5, and prevents caking by absorbing moisture.

Q:What is the shelf life of STPP?

While COA lists 2 years, the actual shelf life is much longer if stored in sealed bags away from sunlight and moisture.

Q:What is the difference between Phase 1 and Phase 2?

They have the same chemical properties but different crystal structures. Phase 1 hydrates faster and releases more heat, while Phase 2 has higher stability.