Chemical Products
Sodium Tripolyphosphate (STPP)
Kaolin dispersant (deflocculant): helps liberate iron so magnetic separators capture it for higher whiteness. Na₅P₃O₁₀, 25 kg bag.
Answer first: Sodium Tripolyphosphate (STPP / 三聚磷酸钠) is a kaolin dispersant (deflocculant). It helps liberate and disperse iron so the magnetic separator can capture iron more effectively, achieving higher whiteness on kaolin and ceramic slurry/glaze lines. Formula Na₅P₃O₁₀; bag label 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) focus: higher Type I content → higher temperature rise when dissolving in water. Q: Does STPP replace a magnetic separator? A: No — it prepares the slurry; PTMS electromagnetic slurry / wet magnetic separators perform iron removal. Related: SHMP (Sodium Hexametaphosphate). Supplier: FOSHAN POWTECH TECHNOLOGY COMPANY LIMITED (PTMS). Inquire for quotation — no price listed.
What you gain
- Kaolin dispersant / deflocculant for slurry preparation before iron removal.
- Helps liberate iron so magnetic separators capture it more effectively.
- Supports higher whiteness for kaolin and ceramic body/glaze.
- Na₅P₃O₁₀, 25 kg net / 25.1 kg gross bag, Made in China.
- Type I: higher Type I (一型) content → higher dissolve temperature rise.
Typical applications
- Kaolin
- Ceramic slurry
- Ceramic glaze
- Feldspar / quartz slurry lines with magnetic separators
Typical models
- STPP 25 kg bag — Na₅P₃O₁₀
Questions and answers
What is Sodium Tripolyphosphate (STPP) used for?
STPP (三聚磷酸钠, Na₅P₃O₁₀) 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. Bag: N.W. 25 kg / G.W. 25.1 kg, Made in China.
What are the bag and COA specifications for STPP?
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 what about 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 STPP and electromagnetic slurry / wet magnetic separators.
How does STPP relate to SHMP?
Both STPP and SHMP are phosphate dispersants / deflocculants used on kaolin and ceramic lines to help liberate iron ahead of magnetic separation for higher whiteness. Buyers often compare both.
Is there a public price?
No. Quotation by inquiry only — email [email protected] or WhatsApp +86 139 2990 7491.
Related products
Sodium Hexametaphosphate (SHMP)
Kaolin dispersant (deflocculant): helps liberate iron so magnetic separators capture it for higher whiteness. P₂O₅ 68% MIN, 25 kg bag. COA GH20260622 (HG/T2519-2017): P₂O₅ 68.1%, Fe 0.04%, Qualified.
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Chemical Products
Kaolin dispersants SHMP and STPP: liberate iron so magnetic separators raise whiteness. 25 kg bags, Made in China.
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Wet Magnetic Separator
Continuous, water- or oil-cooled iron removal for kaolin, feldspar, ceramic glaze and quartz slurry — brighter, cleaner output.
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Ceramic
Glaze and body iron removal for spot-free surfaces — higher first-quality ceramic yield, fewer complaints.
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