CompoundList
Sign in
Silicates, borates and other salts

Calcium borate

Also known as Boron calcium oxide, Portabor a 13, Calcium pyroborate

CAS 1318-33-8Formula B4CaO7Molar mass 195.32 g/molEC 817-854-2
GHS signal word: Warning. Pictograms: Serious health hazard 4 suppliers listed
Get quotes Compare 4 suppliers
Calcium borate chemical structure, B4CaO7, CAS 1318-33-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1318-33-8
Formula
B4CaO7
Molar mass
195.32 g/mol
EC number
817-854-2
HS code
284020
Category
Silicates, borates and other salts

What is Calcium borate?

Plain description, key identifiers and synonyms

Calcium borate is a chemical substance with the molecular formula B4CaO7 and a molar mass of 195.32 g/mol. Its CAS registry number is 1318-33-8. The IUPAC name is calcium 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
calcium 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane
CAS number
1318-33-8Other or deprecated CAS: 12040-58-3
EC number
817-854-2
Molecular formula
B4CaO7
UNII
80UKT9A6QU
InChIKey
IKRMZAOEXULJQX-UHFFFAOYSA-N
InChI
InChI=1S/B4O7.Ca/c5-1-7-3-9-2(6)10-4(8-1)11-3;/q-2;+2
SMILES (canonical and isomeric)
B1(OB2OB(OB(O1)O2)[O-])[O-].[Ca+2]

Synonyms

  • Boron calcium oxide
  • Portabor a 13
  • Calcium pyroborate
  • Calcium borate (undefined)
  • Colemanite (CaH(BO2)3.2H2O)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
195.32 g/molcalc.
Exact mass
195.9642 Dacalc.
LogP (octanol/water)
-4.62calc.
Topological polar surface area
92.27 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, B1OB2OBOB(O1)O2

B1OB2OBOB(O1)O2

2 rings, 9 atoms.

16 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H361Suspected of damaging fertility or the unborn child.
  • H361fdSuspected of damaging fertility. Suspected of damaging the unborn child.
Precautionary statements (5)
  • P203Obtain, read and follow all safety instructions before use.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Calcium borate suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
4 of 4 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

4 suppliers in 4 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Calcium borate price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Flame retardant

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Calcium borate is traded under.

HS 2840.20Indicative HS code

Borates, peroxoborates (perborates), other borates

World exports in 2024
$133M
+9.4% vs 2023, imports $162M
2019 to 2024
Top exporters
  1. United States30.4%
  2. China19.9%
  3. Peru10.0%
Top importers
  1. Canada13.0%
  2. United States11.0%
  3. Brazil9.9%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Calcium borate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Calcium borate, based on the data on this page

Is Calcium borate hazardous?

Calcium borate carries the GHS signal word "Warning". Main hazards: suspected of damaging fertility or the unborn child, suspected of damaging fertility. suspected of damaging the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

Guides for buyers

Practical guides that help when you source, ship or handle Calcium borate

Get quotes for Calcium borate

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Calcium borate
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Calcium borate with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/calcium-borate-1318-33-8" title="Calcium borate structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Silicates, borates and other salts or HS code 284020

4 suppliers
Free quotes, contact stays private
Get quotes