Sodium Tripolyphosphate stpp Powder manufacturers

CAS: 7758-29-4

MF: Na5O10P3

MW: 367.86

EINECS: 231-838-7

Specification: 99% min Sodium Tripolyphosphate Powder

Sample: Eicosapentaenoic Acid Powder

Packaging: 1kg/bag, 25kg/drum

Brand: Henrikang

MOQ: 1 kg

Appearance: White powder

Storage: Cool Dry Place

Shelf Life: 2 Years

Test Method: HPLC

Last updated: March 2026

Sodium Tripolyphosphate Powder Usage and Synthesis.

Sodium tripolyphosphate is a widely used additive in detergent, textile, water softening, boiler descaling, drilling, metal beneficiation and other fields. It has good properties of emulsification, synergism, water softening and pH adjustment. At present, some new methods of producing sodium tripolyphosphate have been studied. The performance characteristics of sodium tripolyphosphate include white granular or powder, density 0.35-0.90g/cm3, melting point 622℃, soluble in water, aqueous solution is alkaline.

Why STPP is the Preferred Choice

The effectiveness of STPP stems from its unique ability to bind with multi-valent metal ions (like Calcium and Magnesium). We offer tailored grades to meet specific industrial needs:

• Superior Sequestering Power: Effectively softens hard water by chelating minerals, enhancing the performance of surfactants in the UK and EU detergent sectors.

• Phosphate Purity: Our food-grade STPP is produced via high-temperature calcination, ensuring a high P2O5 content (approx. 57%) for maximum functional strength.

• Instant Solubility: Available in ultra-fine powder for rapid dissolution or granular form to reduce dust and improve flowability in dry-blending operations.

Purity, Standards, and Compliance

To secure B2B contracts with Global Manufacturers, transparency and certification are non-negotiable:

• FCC & EU Food Additive (E451) Grade: Fully compliant with the Food Chemicals Codex and European Food Safety Authority regulations.

• High Assay Purity: Guaranteed STPP content of $\ge 94\%$, with strict limits on insoluble matter and heavy metals.

• Heavy Metal Screening: Rigorously tested for Arsenic (As), Lead (Pb), and Fluoride (F) to meet California Prop 65 and EU REACH safety benchmarks.

• Full Documentation: Every shipment includes a COA (Certificate of Analysis), MSDS, and Technical Data Sheets (TDS).

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Why "Food Grade & Industrial Grade 94% Purity" is the 2026 Quality Standard

1. Strict Heavy Metal Limits (Food Grade): In 2026, purity is paramount. Food-grade STPP Powder must meet FCC/E451i standards, specifically limiting Arsenic (<3ppm) and Lead (<1ppm) to ensure consumer safety.

2. Hydration Speed & Bulk Density: 2026's gold-standard powders are available in "Light" (Fast-dissolving) and "Dense" (Low-dust) varieties. This allows manufacturers to choose the exact morphology needed for their automated mixing systems.

3. Phase I vs. Phase II Stability: Premium STPP is controlled for its Phase I (High temperature) and Phase II (Low temperature) content, which dictates how the powder reacts with water—preventing caking during long-term storage in humid climates.

Preparation of Bulk Sodium Tripolyphosphate Powder.

Sodium tripolyphosphate is traditionally prepared by neutralizing hot phosphoric acid with a soda ash suspension with a mass fraction of H3PO4 of 75% to produce a neutralized slurry with Na/P of 5:3, which is held at 70°C to 90°C; after which the obtained slurry is sprayed into a polymerization furnace to dehydrate at high temperature and condense into sodium tripolyphosphate at about 400°C.

Frequently Asked Questions

In 2026, the answer is Yes, provided it is Food Grade (E451i). It is widely used to improve the texture of shrimp, ham, and noodles. However, 2026 regulations require clear labeling of phosphate content to help consumers manage their dietary intake.

It acts as a "Builder." By neutralizing the minerals in hard water, it allows the soap or detergent to work at maximum efficiency, even at lower temperatures, making it a favorite for 2026 Energy-Saving Laundry cycles.

Yes. In 2026, STPP is used as a Drilling Mud Dispersant. It prevents the mud from thickening too much under high pressure, ensuring the smooth operation of deep-well drilling equipment.

To maintain 2026 performance levels, store in a cool, dry, and ventilated place. Because it is hygroscopic, ensure bags are tightly sealed to prevent "clumping" or "hydration-caking."

Производители порошка триполифосфата натрия (STPP)
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Hersteller von Natriumtripolyphosphat-Pulver (STPP)
Fabricantes de polvo de tripolifosfato de sodio (STPP)
Fabricantes de pó de tripolifosfato de sódio (STPP)