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Zinc Carbonate (Basic Zinc Carbonate)

CAS 3486-35-9 · Formula CO3Zn · MW 125.4 g/mol

A versatile inorganic zinc source spanning rubber compounding, ceramics, and feed. Industrial grades are used as a fire-retardant filler in rubber and plastics, as a pigment, and as a raw material for ceramics and other zinc salts.

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HS Code
2836.99
At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Pure compound
Primary Role
Color / Pigmentation · Synthesis Intermediate
Solubility
0.001 G/100 G OF WATER AT 15 °C; SOL IN DIL ACIDS, ALKALIES & SOLN OF AMMONIUM SALTS
Functional Roles
Color / Pigmentation Synthesis Intermediate
INCI Name
ZINC CARBONATE
CosIng Functions
OPACIFYING
Industries Served
Beauty & Personal Care Industrial Manufacturing
Applications & Use Cases
  • ▸ Rubber and plastics: Fire-retardant filler.
  • ▸ Pigments: White and extender pigment in coatings and compounds.
  • ▸ Ceramics: Raw material for porcelain, pottery, and glazes.
  • ▸ Feed additive: Zinc micronutrient source.
  • ▸ Drilling fluids: Sulfide scavenger in muds.
Physical Properties
Melting Point
Loses CO2 at 300 °C = 149 °C = 301 °C
Density
4.398 at 20 °C
Solubility
0.001 G/100 G OF WATER AT 15 °C; SOL IN DIL ACIDS, ALKALIES & SOLN OF AMMONIUM SALTS
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.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2836 . 99
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.36
Internationally harmonized (WCO HS)
Subheading 2836.99
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
3486-35-9
Molecular Formula
CO3Zn
Molecular Weight
125.4 g/mol
IUPAC Name
zinc carbonate
INCI Name
ZINC CARBONATE
PubChem CID
19005
InChI Key
FMRLDPWIRHBCCC-UHFFFAOYSA-L
Synonyms & Trade Names
ZINC CARBONATE Zinc monocarbonate Zincspar Carbonic acid, zinc salt (1:1) Natural smithsonite Zinc carbonate (1:1) CI 77950 C.I. 77950 zinc(2+) ion carbonate Basic zinc carbonate Zinc subcarbonate Zincum Carbonicum
Full Description

Zinc carbonate (CAS 3486-35-9), an inorganic zinc salt that occurs naturally as smithsonite. Industrial grades are used as a fire-retardant filler in rubber and plastics, as a pigment, and as a raw material for ceramics and other zinc salts. It also serves as a zinc micronutrient in animal feeds and as a sulfide scavenger in drilling fluids.

Frequently Asked Questions

What is the chemical formula for zinc carbonate?

Zinc carbonate has the formula ZnCO3 (CAS 3486-35-9). It is an inorganic zinc salt that occurs naturally as the mineral smithsonite.

What is industrial-grade zinc carbonate used for?

Industrial uses include a fire-retardant filler in rubber and plastics, a white and extender pigment in coatings, a raw material for ceramics and other zinc salts, a zinc micronutrient in animal feed, and a sulfide scavenger in drilling muds.

What physical state is zinc carbonate?

Zinc carbonate is a solid, supplied as a white powder. RawSource ships it in bulk powder pack sizes for filler, pigment, and feed applications.

What is the HS code for zinc carbonate?

Industrial zinc carbonate classifies under HS 2836.99 (carbonates; peroxocarbonates, other). Confirm the final classification with your customs broker for your destination.

What is the cost of bulk zinc carbonate?

Pricing depends on grade, particle size, and order volume, so RawSource does not publish a fixed list price. CoA and SDS are available; request a current bulk quote for drum, bag, or tote quantities.

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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.
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