How should STPP be stored?

Store in a cool, dry place with packaging sealed. Avoid moisture and high humidity, as anhydrous material tends to cake when exposed to moisture. Keep away from direct sunlight.

Is sample support available?

Yes. Samples are available for lab testing and evaluation. Please contact us for sample requests.

STPP Sodium Tripolyphosphate for Water Softener Applications

Name: STPP Sodium Tripolyphosphate for Water Softener Applications
Brand: Qingdao New Sanda Industry Co., Ltd.
SKU: 2179788302

Shandong, ChinaQingdao New Sanda Industry Co., Ltd.

US$1.40-1.60

25 kg

Product specifications

bag

Sample price:US$0.10/kg.Request sample

Product profile

Customization

Available

CAS No.

7758-29-4

Formula

Na5p3o10

Model NO.

STPP

EINECS

231-838-7

Certification

CCIC

Purity

90%~99%

Type

Sodium Tripolyphosphate

Grade Standard

Food Grade

Transport Package

Ocean Shipping /Air Transportation

Specification

25kg/bag

Trademark

NEWSANDA

Origin

China

HS Code

2835311000

Production Capacity

2000tons Per Year

Key features

Key reducing agent for Ni-P alloy coatings. Produces dense, uniform, and corrosion-resistant layers. Used in electronics, machinery, aerospace, and oil industries.

Enables surface metallization of plastics, ceramics, glass, and quartz. Allows non-conductive materials to achieve conductive and decorative metal finishes .

Functions as a corrosion inhibitor and scale inhibitor. Used in industrial boiler water treatment and oilfield applications to prevent scale and corrosion .

Acts as a catalyst, stabilizer, antioxidant, and dispersant. Used in polymerization reactions, textile finishing, food additives synthesis .

White crystalline powder with high solubility and stable pH. Available in high-purity grades (101-103%). Meets rigorous industrial standards for reliable performance .

Company profile

Qingdao New Sanda Industry Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2015-05-03Nearest Port: QINGDAO, TIANJINAverage Response Time: ≤6.22hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, FCA

AI-Powered supplier vetting

SummaryQingdao New Sanda Industry Co., Ltd. is identified as both a trading company and manufacturer/factory in China, focused on chemicals and construction-related products. The supplier reports ISO-series management certifications, two production lines, 21–30 quality-control staff, and peak- and off-peak order fulfillment within 15 working days. Its stated capabilities include R&D, customized formulations, formulation optimization, application testing, troubleshooting, multilingual documentation, and after-sales support. The supplier reports extensive export coverage and began exporting in 2015, but the available trade evidence shows only one recorded transaction and one associated buyer. Financial credibility cannot be assessed because financial data is excluded from evaluation.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory. Its stated business focuses on chemical products and industrial additives, including Titanium Dioxide, HPMC, VAE, HEC, CMC, and related materials.

CertificationsThe supplier lists ISO 9000, ISO 14001, ISO 9001, ISO 14000, and ISO 20000 certifications. These stated certifications provide explicit evidence of certified management-system coverage, although the slices do not provide certificate numbers, validity dates, or scope details.

After-Sales capabilityThe supplier states that it provides after-sales service, multilingual documentation, formulation optimization, application testing, and troubleshooting. These are explicit service offerings supporting customers after product delivery.

R&D capabilityThe supplier describes a dedicated R&D team, technical innovation, market-responsive product development, and feedback integration from global partners. It also reports total R&D engineer experience of 11–20 years, supporting an established innovation function.

Production capacityThe supplier presents itself as a chemical manufacturer and reports two production lines, 21–30 quality-control staff, and fulfillment within 15 working days in both peak and off-peak periods. Its product portfolio and end-to-end commercial supply description support production capability, although total output details are not evaluated here.

Customization capabilityThe supplier explicitly offers customized formulations for specific application challenges and provides formulation optimization, application testing, and troubleshooting. Its process includes sample testing through full-scale commercial supply, indicating support for tailored industrial additive solutions.

Product Q&A

Q:What is STPP used for?

STPP is a versatile chemical used as a water softener, dispersant, emulsifier, and food additive. It is widely used in detergents, ceramics, water treatment, and food processing.

Q:What is the recommended dosage in food?

Dosage depends on the food category. For canned food and juice drinks, the limit is 1.0g/kg. For meat products, dairy, and ice cream, the limit is 5.0g/kg. Check local regulations for specific applications.

Q:Is STPP safe for use?

Yes. The acceptable daily intake (ADI) is 0-70mg/kg (based on phosphorus). The oral LD50 in rats is 4g/kg. It is considered safe when used within regulatory limits.

Q:How does STPP work?

It chelates metal ions like calcium and magnesium, softening hard water. It also provides pH buffering, emulsifies oils, and helps disperse particles.

Q:Does STPP dissolve in water?

Yes. It dissolves easily in water. At room temperature, about 14.5g can dissolve in 100ml of water. Its 1% aqueous solution has a pH of about 9.7.