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Oxides and peroxides

Corundum

Also known as Electrocorundum, Korund, MP 1 (Refractory)

CAS 1302-74-5Formula Al2O3Molar mass 101.96 g/molEC 603-397-4
31 suppliers listed
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Corundum chemical structure, Al2O3, CAS 1302-74-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1302-74-5
Formula
Al2O3
Physical form
Powder
Boiling point
Decomposes
HS code
251320
Category
Oxides and peroxides
Illustrative photo, closed white HDPE bottles and amber jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Corundum?

Plain description, key identifiers and synonyms

Corundum is an oxide mineral.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
oxo(oxoalumanyloxy)alumane
CAS number
1302-74-5Other or deprecated CAS: 12415-34-8
EC numbers
603-397-4, 638-887-7
Molecular formula
Al2O3
MDL number
MFCD00003424, MFCD00211795, MFCD07370730
INCI name
SAPPHIRE POWDER
InChIKey
TWNQGVIAIRXVLR-UHFFFAOYSA-N
InChI
InChI=1S/2Al.3O
SMILES (canonical and isomeric)
O=[Al]O[Al]=O

Synonyms

  • Electrocorundum
  • Korund
  • MP 1 (Refractory)
  • Dural F 30
  • Corindon
  • Saphir
  • Rubis
  • Emery
  • oxo(oxoalumanyloxy)alumane
  • Sapphire (Al2O3)
  • Corundum (Al2O3)
  • Aluminum oxide, alpha
  • Mp alumina dcc
  • Mp alumina n
  • alpha-Corundum
  • Mp aluminum oxide
  • Aluminium Oxide, Alumina
  • Mp alumina a-tlc
  • Mp alumina b-tlc
  • Mp alumina g-tlc
  • Mp alumina N-tlc
  • MP ALUMINA B, Active
  • MP ALUMINA N, Active
  • MP ALUMINA AActivity: I
  • MP ALUMINA BActivity: I
Show all 38 synonyms
  • MP ALUMINA NActivity: I
  • Abramant F 36
  • MP ALUMINAActivity: II-III
  • Abramax F 46
  • Abramax F 54
  • Aluminum oxide, catalyst support
  • MP ALUMINA AActivity: Super I
  • MP ALUMINA BActivity: Super I
  • MP ALUMINA NActivity: Super I
  • KO 7
  • EKF 100
  • KER 710
  • Aluminum Oxide (Activated, Basic, Brockmann I)

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

Physical form
Powderexp.
Boiling point
Decomposesexp.
Vapour pressure
0 mmHg (approx)exp.

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
101.96 g/molcalc.
Exact mass
101.9478 Dacalc.
LogP (octanol/water)
-1.07calc.
Topological polar surface area
43.37 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms

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

Corundum suppliers

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

All 31 suppliers
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Where suppliers are based

31 suppliers in 6 countries

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Corundum 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.

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate, Other.

Consumer uses: Other, Intermediate.

Cosmetic ingredient, INCI name SAPPHIRE POWDER(opacifying)

Functional uses

  • Opacifer

Cosmetic functions

  • Opacifying

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2513.20Exact HS code

Emery, natural corundum, natural garnet and other natural abrasives

World exports in 2024
$246M
+1.4% vs 2023, imports $232M
2019 to 2024
Top exporters
  1. Australia37.8%
  2. China17.5%
  3. India * partner reported10.2%
Top importers
  1. United States23.8%
  2. Saudi Arabia11.2%
  3. United Arab Emirates * partner reported8.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Corundum is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Corundum, based on the data on this page

What is Corundum?

Corundum is an oxide mineral.

What is the CAS number of Corundum?

The CAS registry number of Corundum is 1302-74-5. Other or deprecated CAS numbers: 12415-34-8.

What is the molecular formula and weight of Corundum?

The molecular formula of Corundum is Al2O3 and its molar mass is 101.96 g/mol.

What is Corundum used for?

Industrial uses: Intermediate, Other. Consumer uses: Other, Intermediate.

Is Corundum hazardous?

No GHS hazard classification for Corundum is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Corundum?

Corundum is usually classified under HS code 251320 (Emery, natural corundum, natural garnet and other natural abrasives). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Corundum?

CompoundList lists 31 suppliers of Corundum in United States, China, Germany, Spain and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Corundum?

Suppliers quote Corundum on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Corundum

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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