Product Description
Dibromomethane, also known as methylene bromide, is a halogenated organic compound with the chemical formula CH₂Br₂ and CAS number 74-95-3. It is a colorless, dense liquid with a characteristic odor. As a brominated methane derivative, it contains two carbon-bromine bonds that contribute to its chemical reactivity and make it useful in selected organic synthesis applications.
Dibromomethane is primarily used as a specialty chemical intermediate and laboratory reagent. It can participate in various organic reactions and serve as a starting material for preparing other brominated compounds and functional organic molecules. Its use requires appropriate industrial handling procedures due to its hazardous properties. Product selection should be based on purity, specifications, and the intended application.
Dibromomethane Chemical Properties
Melting point | -52 °C |
Boiling point | 96-98 °C(lit.) |
density | 2.477 g/mL at 25 °C(lit.) |
vapor density | 6.05 (vs air) |
vapor pressure | 34.9 mm Hg ( 20 °C) |
refractive index | n20/D 1.541(lit.) |
Fp | 96-98°C |
storage temp. | Store below +30°C. |
solubility | 11.7g/l |
form | Liquid |
color | Clear colorless to slightly brown |
Water Solubility | 0.1 g/100 mL (20 ºC) |
Merck | 14,6061 |
BRN | 969143 |
Dielectric constant | 6.7（10℃） |
Stability: | Stable. Incompatible with strong oxidizing agents, aluminium, magnesium. Reacts violently with potassium. |
CAS DataBase Reference | 74-95-3(CAS DataBase Reference) |
NIST Chemistry Reference | Methane, dibromo-(74-95-3) |
EPA Substance Registry System | Dibromomethane (74-95-3) |
Safety Information
Hazard Codes | Xn,T,F |
Risk Statements | 20-52/53-39/23/24/25-23/24/25-11 |
Safety Statements | 24-61-45-36/37-16-7 |
RIDADR | UN 2664 6.1/PG 3 |
WGK Germany | 2 |
RTECS | PA7350000 |
TSCA | Yes |
HS Code | 2903 39 15 |
HazardClass | 6.1 |
PackingGroup | III |
Hazardous Substances Data | 74-95-3(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 108 mg/kg LD50 dermal Rabbit > 4000 mg/kg |
Safety and Storage
Dibromomethane is a hazardous chemical. Consult the current product-specific SDS before handling.
Use only with suitable ventilation and appropriate engineering controls.
Avoid inhalation of vapors and contact with skin and eyes.
Wear suitable chemical-resistant gloves, protective clothing, and eye protection.
Keep containers tightly closed and properly labeled.
Store in a cool, dry, well-ventilated area according to the supplier's SDS.
Prevent release into drains, soil, or the environment.
