STPP Sodium Tripolyphosphate 25 kg bag Na5P3O10 Made in China kaolin dispersant

Sodium Tripolyphosphate (STPP) — Kaolin Dispersant

Quotation by email

Answer first: Sodium Tripolyphosphate (STPP / 三聚磷酸钠) is a kaolin dispersant (deflocculant). It helps liberate and disperse iron so a magnetic separator can capture iron more effectively, raising kaolin and ceramic slurry/glaze whiteness. Formula Na₅P₃O₁₀; bag N.W. 25 kg / G.W. 25.1 kg, Made in China. Example COA (batch 202560610, GB/T9983-2004, Qualified): STPP 93.9% (≥90), P₂O₅ 58.4% (≥56.5), Fe 0.006% (≤0.015), water-insoluble 0.03% (≤0.1), whiteness 90% (≥85), pH 9.53 (9.2–10). Anhydrous and hexahydrate forms exist. Type I (一型): higher Type I content → higher temperature rise when dissolving in water. STPP does not replace the magnetic separator. Related: SHMP. Supplier: FOSHAN POWTECH TECHNOLOGY COMPANY LIMITED (PTMS). Quotation by email only — no public price. Keywords: STPP, sodium tripolyphosphate, kaolin dispersant, deflocculant, magnetic separator, whiteness, Type I, Na5P3O10, 25 kg bag.

Availability: On request

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Specifications

ProductSodium Tripolyphosphate (STPP / 三聚磷酸钠)
Chemical formulaNa₅P₃O₁₀
RoleKaolin / ceramic slurry dispersant (deflocculant)
Process effectHelps liberate iron for magnetic separator iron removal → higher whiteness
FormsAnhydrous and hexahydrate forms exist
Type I noteHigher Type I (一型) content → higher temperature rise when dissolving in water
STPP content (COA measured / standard)93.9% (standard ≥90.0)
P₂O₅ (COA measured / standard)58.4% (standard ≥56.5)
Iron Fe (COA measured / standard)0.006% (standard ≤0.015)
Water-insoluble (COA measured / standard)0.03% (standard ≤0.1)
Whiteness (COA measured / standard)90% (standard ≥85)
pH (COA measured / standard)9.53 (standard 9.2–10)
Executive standardGB/T9983-2004
COA batch / result202560610 / Qualified
Net weight (N.W.)25 kg
Gross weight (G.W.)25.1 kg
Packing25 kg bag
OriginMade in China
Unitbag

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Questions and answers

What is Sodium Tripolyphosphate (STPP) used for?

STPP is a kaolin dispersant (deflocculant). It helps liberate and disperse iron so a magnetic separator can capture iron more effectively, raising kaolin and ceramic slurry/glaze whiteness. Formula Na₅P₃O₁₀; 25 kg bag, Made in China.

What are the bag and COA specifications?

Bag: SODIUM TRIPOLYPHOSPHATE, STPP, Na₅P₃O₁₀, N.W. 25KGS, G.W. 25.1KGS, MADE IN CHINA. Example COA (batch 202560610, GB/T9983-2004, Qualified): STPP 93.9% (≥90), P₂O₅ 58.4% (≥56.5), Fe 0.006% (≤0.015), water-insoluble 0.03% (≤0.1), whiteness 90% (≥85), pH 9.53 (9.2–10).

Anhydrous vs hexahydrate — and Type I (一型)?

STPP exists in anhydrous and hexahydrate forms. Higher Type I (一型) content leads to a higher temperature rise when dissolving in water. Confirm form and Type I preference when you inquire.

Does STPP replace a magnetic separator?

No. STPP prepares the slurry; the magnetic separator performs iron removal. Used together they support higher whiteness. PTMS supplies both.

How does STPP relate to SHMP?

Both are phosphate dispersants / deflocculants for kaolin and ceramic lines to help liberate iron ahead of magnetic separation for higher whiteness.

Is there a public price?

No. Quotation by email only — [email protected] or WhatsApp +86 139 2990 7491.