Molekula
Zinc Borate Hydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Zinc Borate Hydrate is an inorganic compound primarily used as a flame retardant, smoke suppressant, and corrosion inhibitor in plastics, textiles, adhesives, and coatings. It enhances fire resistance by releasing water and forming a protective char layer while also improving material durability. This chemical has a CAS number of 138265-88-0, with the molecular formula B₂H₈O₇Zn₃ and a molecular weight of 337.8 g/mol. It is stored at ambient temperatures and carries a Warning signal word under GHS classification, with hazard statements H361d (suspected of damaging the unborn child), H400 (very toxic to aquatic life) and H410 (very toxic to aquatic life with long-lasting effects), so it should be handled with appropriate precautions and kept out of the environment. Molekula supplies Zinc Borate Hydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Loss on Ignition | 13.0-15-5 % |
| Particle Size | < 7 um |
| Moisture | < 0.3 % |
| Whiteness | < 95% |
| B2O3 | 47.0-49.0 % |
| Zinc Oxide (ZnO) | 37.5-39.5 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90031786 |
| CAS Number | 138265-88-0 |
| Molecular Formula | B2H8O7Zn3 |
| Molecular Weight | 337.8 |
| SMILES | B(O)(O)O.B(O)(O)O.O.[Zn].[Zn].[Zn] |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 2840.20.0000 |
| Tariff Code | 2840209090 |
Safety & GHS
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H361d Suspected of damaging fertility. Suspected of damaging the unborn child.
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P391 Collect spillage
- P405 Store locked up
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is zinc borate hydrate commonly used for?
Zinc borate hydrate is primarily used as a flame retardant in plastics, rubber, textiles, and wood products, as well as a fungicide and insecticide in agricultural and industrial applications.
What is the molecular formula and molecular weight of zinc borate hydrate?
The molecular formula is **B₂H₈O₇Zn₃**, and the molecular weight is **337.8 g/mol**.
How should zinc borate hydrate be stored?
Store in a cool, dry place at ambient temperature, ensuring the container is tightly sealed to prevent moisture absorption.
What grades or purity levels of zinc borate hydrate does Molekula supply?
Molekula supplies **technical-grade zinc borate hydrate** suitable for industrial applications, with purity levels meeting standard flame-retardant and agrochemical specifications.
Can Molekula supply zinc borate hydrate in bulk quantities?
Yes, Molekula can provide zinc borate hydrate in bulk, with packaging options including drums, bags, or custom solutions based on customer requirements.
What documentation comes with an order of zinc borate hydrate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **Safety Data Sheet (SDS)** compliant with global regulations.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.