Boron carbide , 98%, ≥200 , 12069-32-8

Synonym(s):
B 626010;B 626300;Carbon tetraboride

CAS NO.：12069-32-8

Empirical Formula: CB4

Molecular Weight: 55.25

MDL number: MFCD00011520

EINECS: 235-111-5

PRODUCT Properties

• Melting point: 2450°C
• Boiling point: 3500°C
• Density: 2.51 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• solubility: insoluble in H2O, acid solutions
• form: powder
• color: Black
• Specific Gravity: 2.51
• Resistivity: 4500 (ρ/μΩ.cm)
• Water Solubility: Insoluble in water.
• Crystal Structure: Hexagonal
• Merck: 14,1344
• Stability: Stable. Incompatible with oxidizing agents. Not flammable.
• InChI: 1S/CB4/c1-2-4-5-3-1
• InChIKey: NOJMLSPGQSYAIT-UHFFFAOYSA-N
• SMILES: B1=BB=C=B1
• CAS DataBase Reference: 12069-32-8(CAS DataBase Reference)
• NIST Chemistry Reference: Boron carbide(12069-32-8)
• EPA Substance Registry System: Boron carbide (B4C) (12069-32-8)

Description and Uses

Sodium tetraborate decahydrate/borax (anhydrous) is a clear, colorless or pale yellow hygroscopic substance with a faint odor of detergent. It is stable and is incompatible with powdered metalsand slightly soluble in water. It is extensively used in the industrial manufacturing of metallurgical fluxes, fiberglass, ceramics, fertilizers, enamels, heat-resistant glass (e.g., Pyrex), and other chemicals. It decomposes on heating or on burning producing toxic fumes including sodium oxide, reacts with strong oxidants, and in fire gives off irritating or toxic fumes (or gases).

Abrasive. In the manufacture of hard and chemicals-resistant ceramics or wear-resistant tools. Finely pulverized B4C can be molded under (considerable) pressure and heat. The resulting products are very wear-resistant, such as pressure-blast nozzle liners, thread guides, extrusion dies, and all types of extremely accurate plug, snap, and ring gages.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H332-H335
• Precautionary statements: P261-P280a-P304+P340-P305+P351+P338-P405-P501a
• PPE: dust mask type N95 (US), Eyeshields, Gloves
• Hazard Codes: Xn
• Risk Statements: 20
• Safety Statements: 22-36/37/39-38
• WGK Germany: 3
• RTECS: ED7420000
• TSCA: TSCA listed
• HS Code: 28499010
• Storage Class: 11 - Combustible Solids