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    Phosphorus tribromide
    identification Chinese name: Phosphorus tribromide
    English Name: phosphorus tribromide
    Molecular formula:  PBr three Molecular weight:  270.72
    Structural formula:  
    CAS No 7789-60-8 RTECS No  TH4460000
    HS Code: two billion nine hundred and three million three hundred and ninety-nine thousand and ninety UN number: UN 1808 8/PG 2
    Standard risk: C IMDG rules page:  
    Physical and chemical properties Appearance and character: Colorless fuming liquid. It has a pungent smell.
    Main uses: It is used as an organic bromination agent. Reducing agent. Used to analyze sugar and oxygen.
    Melting point:  -40 °C Boiling point:  175 °C(lit.)
    Relative density (water = 1)  2.88 g/mL at 20 °C(lit.) Moisture content: ≤ 0.05% 
    Content of phosphorus tribromide ≥  99% PH value:  6.0~8.0
    KPa (saturated vapor pressure)  0.27 psi ( 54 °C) Solubility: It is miscible with acetone, chloroform, carbon tetrachloride and carbon disulfide
    Critical temperature (℃) - Critical pressure (MPA) -
    Heat (kJ / mol): 1 -
    Risk of combustion and explosion Conditions to avoid contact: Moist air.
    Flammability: - Fire risk classification of construction planning: -
    Flash point (℃) 172.9°C Spontaneous combustion temperature (℃) -
    Lower explosion limit (v%): - Upper explosion limit (v%): -
    Hazard characteristics: It reacts with water or acid to generate heat and even explode
    Combustion (decomposition) products: Hydrogen bromide, phosphorus oxide, phosphine Stability: stable
    Contraindications: Strong alkali, water, alcohol, strong oxidant, acid, alkali, potassium, sodium Polymerization hazard: Non aggregation
    Fire fighting method: Dry sand, carbon dioxide. Do not use water.
    Risk category: eight point one Packaging mark of dangerous goods: corrosion
    Packaging and transportation Packing category: III
    Precautions for storage and transportation: The warehouse should be ventilated and dry at low temperature; it should be stored separately from alkali, oxidant, organic matter and inflammable substance

     

    Quality index of phosphorus tribromide
    project Index value
    appearance Colorless fuming liquid
    Molecular formula   PBr three
    Content of phosphorus tribromide ≥  99%
    Density (D2020) g / cm three  2.88 g/mL at 20 °C(lit.) 
    PH value  6.0~8.0
    Moisture ≤ 0.05%

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