Lead sulfide , Pb≥82% , 1314-87-0

Synonym(s):
Lead monosulfide;Lead sulfide;Natural lead sulfide

CAS NO.：1314-87-0

Empirical Formula: PbS

Molecular Weight: 239.26

MDL number: MFCD00016280

EINECS: 215-246-6

PRODUCT Properties

• Melting point: 1114°C
• Boiling point: 1281°C (estimate)
• Density: 7.5 g/mL at 25 °C(lit.)
• refractive index: 3.921
• storage temp.: 2-8°C
• solubility: Soluble in strong HNO₃, in excess of hot HCl
• form: Metallic Crystals, Powder Lump
• Specific Gravity: 7.5
• color: White
• Water Solubility: Soluble in water (0.00086g/L) and acid. Insoluble in alcohol, and potassium hydroxide.
• Crystal Structure: Cubic, Halite Structure - Space Group Fm3m
• Merck: 14,5421
• Solubility Product Constant (Ksp): pKsp: 27.1
• Exposure limits: ACGIH: TWA 0.05 mg/m3; NIOSH: IDLH 100 mg/m3; TWA 0.050 mg/m3
• Stability: Stable. Incompatible with oxidizing agents, acids, water.
• InChIKey: XCAUINMIESBTBL-UHFFFAOYSA-N

Description and Uses

Lead sulfide is a silvery to black crystallinepowder. Molecular weight = 239.25; Boilingpoint =1281℃ (sublimes); Freezing/Meltingpoint= 1114℃. Hazard Identification (based on NFPA-704M Rating System): Health 1, Flammability 0, Reactivity 0.Practically insoluble in water (0.000086 g/100-cc water at13℃).

Lead(II) sulfide is used as a semiconductor. Used in electronic devices and Infrared sensor.

Safety

• Symbol(GHS): GHS02,GHS07,GHS08,GHS09
• Signal word: Danger
• Hazard statements: H225-H304-H315-H336-H360Df-H373-H411
• Precautionary statements: P201-P210-P273-P301+P310+P331-P302+P352-P308+P313
• Hazard Codes: T,N
• Risk Statements: 61-20/22-33-50/53-62
• Safety Statements: 53-45-60-61
• RIDADR: UN 3077 9/PG 3
• WGK Germany: 3
• RTECS: OG4550000
• TSCA: Yes
• HazardClass: 6.1(b)
• PackingGroup: III
• HS Code: 2830908500
• Toxicity: LD50 i.p. in rats: 160 mg Pb/100 g (Bradley, Fredrick)