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Zinc Borate (Boric acid (HBO2), zinc salt (2:1))

Zinc Borate (Boric acid (HBO2), zinc salt (2:1))

CAS Number: 1332-07-6

Molecular Formula: B2O6Zn3

Purity: ≥ 98%

Zinc borate 223 GradeMineral flame retardant & smoke suppresantBorate based polymer additiveREACH registeredISO certified flame retardant

About Zinc Borate (Boric acid (HBO2), zinc salt (2:1))

Zinc Borate is a white crystalline mineral additive universally used as a halogen-free flame retardant synergist, smoke suppressant, and polymer stabilizer. Zinc Borate enhances fire resistance, smoke suppression, and thermal stability in PVC, polyolefins, elastomers, and coatings applications. Supplied as industrual ...

Zinc Borate (Boric acid (HBO2), zinc salt (2:1)) Specifications

CAS Number
1332-07-6
Molecular Formula
B2O6Zn3
IUPAC Name
trizinc;diborate
Canonical SMILES
B([O-])([O-])[O-].B([O-])([O-])[O-].[Zn+2].[Zn+2].[Zn+2]
InChI Key
BIKXLKXABVUSMH-UHFFFAOYSA-N
InChI
1S/2BO3.3Zn/c2*2-1(3)4;;;/q2*-3;3*+2
PubChem CID
167155
EINECS Number
233-803-1 or 215-566-6 (varies depends upon substance)
HSN No
2840.20.90
Appearance
White, odorless powder
Density
~2.67 g/cm³
Mohs Hardness
~4.5
Melting Point
980 °C (anhydrous)
Dehydration Temperature
290–415 °C (hydrated form)
Refractive Index
~1.58
Solubility
Practically insoluble in water; soluble in acids
ZnO content
~37–40%
B₂O₃ content
~45–48%
H₂O (crystalline water)
~13–15% (hydrated grade)
Average Particle Size (d50)
2–10 µm (depending on grade)
Loss on Ignition (at 1000 °C)
~14%
Purity
≥ 98%
GHS Hazard Statements
H319: Serious eye damage/eye irritation
Precautionary Statement Codes
P264+P265, P280, P305+P351+P338, and P337+P317

Polymer Flame Retardancy

Enhances thermal stability and fire resistance in PVC, polyolefins, elastomers, and engineering plastics

Smoke Suppression

Smoke suppressant in (PVC, PE, PP, EVA, epoxy resins). Improves thermal stability of polymer systems. Reduces smoke density during combustion

Industrial Coatings

Preferred in intumescent coatings, paints, and sealants. Improves chemical resistance and weatherability

Functional Benefit

Acts as halogen-free synergist, stabilizer, and smoke suppressant in flame retardant systems

Electronics & Electricals

Enhances arc resistance and tracking resistance in electrical components. High preferrence for wire & cable insulation, circuit boards, housings

Rubber Industry

Rubber conveyor belts, hoses, gaskets for flame resistance

Construction Materials

Used in roofing, flooring, wall panels, insulation materials

Temperature

Store at 15–30 °C

Environment

Keep dry and sealed, avoid direct moisture

Shelf Life

Up to 3 years under recommended storage conditions

Handling

Use PPE (gloves, dust mask, goggles); avoid dust inhalation

Zinc Borate (Boric acid (HBO2), zinc salt (2:1)) FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

Rounded Top

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