At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Salt
Primary Role
Corrosion Inhibition · Color / Pigmentation
Functional Roles
Industries Served
Applications & Use Cases
- ▸ Primary anti-corrosive pigment in industrial and protective primers, where it passivates steel substrates and is a non-toxic replacement for legacy lead- and chromate-based inhibitors.
- ▸ Loaded into solvent-borne and water-borne coatings, marine paints, and coil-coating systems to extend service life of metal structures exposed to weathering and salt environments.
- ▸ Used in automotive and general metal finishing primers to improve adhesion and provide cathodic/anodic corrosion protection at the coating-metal interface.
- ▸ Formulated into traffic paints, structural-steel maintenance coatings, and zinc-rich systems as a supplementary inhibitive pigment alongside extenders and binders.
- ▸ Applied in dental and specialty cement chemistry (Zinc Phosphate Cement) outside the coatings market, leveraging its hard, insoluble set.
Physical Properties
Appearance
White to off-white
Form
Fine powder
Odor
Odorless
Density
3.0-3.2 g/cm3 (typical)
Solubility in Water
Practically insoluble
Melting Point
approx. 900 C (decomposes)
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
Chemical Identity
CAS Number
7779-90-0
Molecular Formula
O8P2Zn3
Molecular Weight
386.1 g/mol
IUPAC Name
trizinc diphosphate
PubChem CID
InChI Key
LRXTYHSAJDENHV-UHFFFAOYSA-H
Synonyms & Trade Names
Full Description
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 231-944-3
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Related Products
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.