Boron carbide CAS 12069-32-8

Product Name: Boron Carbide
English Alias: Black Diamond; Tetrabor
CAS Number: 12069-32-8
Molecular Formula: B₄C
Molecular Weight: 55.25 g/mol
Appearance: Black-gray crystalline powder
Package: 25 kg/bag (paper-plastic composite bag with inner PE liner)

What is Boron Carbide？

Boron Carbide is an extremely hard ceramic material appearing as a black-gray crystalline powder. It is one of the hardest known materials, second only to cubic boron nitride and diamond. The compound is insoluble in water and organic solvents but soluble in molten alkalis. It exhibits exceptional hardness, high neutron absorption cross-section, and excellent thermal stability, making it valuable in nuclear, military, and industrial applications.

COA (Certificate of Analysis):

	Chemical requirement
Particle Size	LOT NO.	Total Boron	Free Boron	Boron Anhydride	Boron Compound	Total Carbon	Free Carbon	Carbon Compound	Iron	Boron Carbide
		T.B.   %	F.B.   %	B2O3   %	%	T.C.  %	F.C.  %	%	Fe  %	B4C    %	T.B.+T.C. %
		总硼	游硼	三氧化二硼	化合硼	总碳	游碳	化合碳	铁	碳化硼	总硼+总碳
B4C   5F	1805ZXD148	77.12	0.48	0.42	76.64	21.05	1.40	19.65	0.19	96.29	98.17
Particle size distribution (粒度分布)   um
Particle Size	LOT NO.	D0	D3	D50	D94	D100
B4C   5F	1805ZXD148	0.375	0.546	3.023	7.044	17.18

Application:

1. Abrasive Materials: Blasting nozzles, grinding media, and cutting tools

2. Refractory Materials: High-temperature furnace components and linings

3. Precision Nozzles: Sandblasting and water jet cutting nozzles

4. Semiconductor Industry: Wafer polishing and precision machining

Safety Profile:

Boron Carbide dust may cause respiratory irritation. Inhalation of fine particles may be harmful. Use appropriate personal protective equipment including NIOSH-approved dust mask, safety glasses, and gloves when handling. Avoid generating dust. The substance is stable and non-flammable under normal conditions. For detailed safety information, consult the full Safety Data Sheet (SDS).

Storage Requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly closed and sealed. Maintain storage temperature below 30°C. Relative humidity below 60% recommended. Store away from strong oxidizers and acids.

Transport & Packaging:

Boron Carbide is packaged in moisture-proof paper-plastic composite bags with inner polyethylene liner (25 kg net weight per bag). Transport as non-hazardous material under normal conditions. Ensure containers are properly sealed and protected from physical damage during transportation. Store away from incompatible materials.