Tribromomethane , Analysis standard , 75-25-2
Synonym(s):
Bromoform;Tribromomethane;Tribromomethane, Methane tribromide, Methyl tribromide
CAS NO.：75-25-2
Empirical Formula: CHBr3
Molecular Weight: 252.73
MDL number: MFCD00000128
EINECS: 200-854-6
PRODUCT Properties
| Melting point: | 8 °C |
| Boiling point: | 150 °C |
| Density | 2.89 g/mL at 25 °C(lit.) |
| vapor density | 8.7 (vs air) |
| vapor pressure | 5 mm Hg ( 20 °C) |
| refractive index | n |
| Flash point: | 148-150°C |
| storage temp. | Store at +15°C to +25°C. |
| solubility | water: soluble800 part(lit.) |
| pka | 13.7(at 25℃) |
| form | Liquid |
| color | White to off-white |
| Odor | Chloroform-like odor |
| Water Solubility | slightly soluble, 0.301 g/100 mL |
| Sensitive | Light Sensitive |
| Merck | 14,1420 |
| BRN | 1731048 |
| Henry's Law Constant | 3.36 at 20.0 °C, 7.09 at 35.0 °C, 20.5 at 50.0 °C (equilibrium static cell, Wright et al., 1992) |
| Exposure limits | NIOSH REL: TWA 0.5 ppm (5 mg/m3), IDLH 85e respiratory irritation
(Patnaik, 1992). |
| Dielectric constant | 4.4（20℃） |
| Stability: | Stability May be an explosion hazard, especially when heated. Stable, but light-sensitive. Non-flammable. Incompatible with chemically active metals, strong bases. May contain ca 1% ethanol or 1-pentene (amylene) as a stabilizer. |
| InChIKey | DIKBFYAXUHHXCS-UHFFFAOYSA-N |
| LogP | 2.400 |
| CAS DataBase Reference | 75-25-2(CAS DataBase Reference) |
| IARC | 3 (Vol. 52, 71) 1999 |
| NIST Chemistry Reference | Methane, tribromo-(75-25-2) |
| EPA Substance Registry System | Tribromomethane (75-25-2) |
Description and Uses
Bromoform is a colorless (turns yellow onexposure to air) with a sweet-smelling, chloroform-likeodor. Odor threshold=0.447 ppm. Molecular weight =252.8; Specific gravity (H2O:1)=2.9; Boiling point =149.5 ℃; Freezing/Melting point=8.3 ℃ (to hexagonalcrystals); Vapor pressure=5 mmHg at 20 ℃. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 0, Reactivity 0. Soluble in water;solubility=0.1% at 20 ℃.
Bromoform is a colorless to yellow liquid with a density about three times that of water. It has an odor and sweetish taste similar to chloroform and is not combustible. It has been used as a degreasing solvent, in chemical synthesis, and in fire extinguishers, and is no longer used as a sedative for children with whooping cough. Currently, bromoform is produced only in small amounts for use in laboratories and in geological and electronics testing.
Safety
| Symbol(GHS) |     GHS02,GHS05,GHS06,GHS09 |
| Signal word | Danger |
| Hazard statements | H226-H302-H314-H331-H411 |
| Precautionary statements | P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | T,N,F |
| Risk Statements | 23-36/38-51/53-22-39/23/24/25-23/24/25-11 |
| Safety Statements | 28-45-61-28A-36/37-16-7-26-63 |
| OEB | B |
| OEL | TWA: 0.5 ppm (5 mg/m3) [skin] |
| RIDADR | UN 2515 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | PB5600000 |
| F | 8-10 |
| TSCA | Yes |
| HS Code | 2903 39 19 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 75-25-2(Hazardous Substances Data) |
| Toxicity | LD50 s.c. in mice: 7.2 mmol/kg (Kutob, Plaa) |
| IDLA | 850 ppm |
