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.)
• 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.
• InChIKey: NOJMLSPGQSYAIT-UHFFFAOYSA-N

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).

Boron carbide (B4C) is a hard, black crystal that is used as an abrasive powder and as an additive to strengthen composite parts in aircraft.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H332-H335
• Precautionary statements: P261-P280a-P304+P340-P305+P351+P338-P405-P501a
• Hazard Codes: Xn
• Risk Statements: 20
• Safety Statements: 22-36/37/39-38
• WGK Germany: 3
• RTECS: ED7420000
• TSCA: Yes
• HS Code: 28499010