Boron Nitride

Description

Boron Nitride · CAS 78666-05-4 · BN. UNII 2U4T60A6YD.

Identification

CAS Registry Number	78666-05-4
PubChem CID	66227
Molecular formula	BN
IUPAC name	azanylidyneborane
UNII (FDA)	2U4T60A6YD

Computed Descriptors

Molecular Weight	24.82
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	25.0123792
Monoisotopic Mass	25.0123792
Topological Polar Surface Area	23.8
Heavy Atom Count	2
Formal Charge	0
Complexity	10

Physical description & handling notes

• Dry Powder; Dry Powder; Liquid; Other Solid; Dry Powder; Other Solid
• Solid; [Merck Index] Insoluble; [MSDSonline] Crystallizes into 3 forms: alpha (white and hexagonal), beta (high-pressure cubic), and gamma (high-pressure wurtzite structure); [Ullmann]

Regulatory Status

Regulatory & Food Contact

FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS For use as a lubricant on bakery oven chains with incidental food contact. The FCS is to be used in ovens making baked goods at temperatures up to 1000oF. For use as a lubricant in food processing equipment with incidental food contact The FCS is used at a level not to exceed 40 wt-% boron nitride in lubricant. It is specifically used in oil an

GHS notification summary

87.9% (422 / 480)

GHS Hazard Classification

GHS notification summary	87.9% (422 / 480)
Reported hazard statements	H319 (11.7%), H335 (10.8%)

Documented Uses

• Used to make alloys, semiconductors, nuclear reactors, and lubricants; [Merck Index] alpha-Boron films are used in microelectronics; beta-Boron nitride is used to make abrasive grit for grinding wheels and saws; [Ullmann]
• Metal Preparation and Pouring [Category: Foundry]
• Semiconductor Manufacturing [Category: Industry]
• Cosmetics -> Opacifying; Absorbent; Skin conditioning
• Not Known or Reasonably Ascertainable
• Information on 11 consumer products that contain Boron nitride in the following categories is provided:

Synonyms

Boron nitride; 10043-11-5; Elbor; Boron mononitride; Boron nitride (BN); Borazon; Elboron; Kubonit; Wurzin; Geksanit R; Hexanite R; Hexanit R; Super mighty M; Kubonit KR; Denka boron nitride GP; Elbor R

Frequently Asked Questions

What are the CAS number and molecular formula of Boron Nitride?

CAS 78666-05-4; molecular formula BN; molecular weight — g/mol.

What other names is Boron Nitride known by?

Boron nitride, 10043-11-5, Elbor, Boron mononitride, Boron nitride (BN), Borazon.

What is the regulatory status of Boron Nitride?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS; For use as a lubricant on bakery oven chains with incidental food contact..

Is Boron Nitride classified as hazardous?

87.9% of GHS notifications report no hazard classification (422 of 480).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.