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CAS No.: | 74-97-5 |
---|---|
Name: | Bromochloromethane |
Article Data: | 39 |
Molecular Structure: | |
Formula: | CH2BrCl |
Molecular Weight: | 129.384 |
Synonyms: | Fluorocarbon 1011;Halon 1011;Methylene bromide chloride;Monochloromonobromomethane;NSC 7294;Methane,bromochloro-; |
EINECS: | 200-826-3 |
Density: | 1.858 g/cm3 |
Melting Point: | -88 °C |
Boiling Point: | 65.1 °C at 760 mmHg |
Flash Point: | 11°C |
Solubility: | 9 g/L (20 °C) in water |
Appearance: | white to light yellow crystal powder |
Hazard Symbols: | Xn, N |
Risk Codes: | 20-36/37/38-59 |
Safety: | 26-37/39-59 |
Transport Information: | UN 1887 |
PSA: | 0.00000 |
LogP: | 1.57760 |
IUPAC Name: Bromo(chloro)methane
Empirical Formula: CH2BrCl
Molecular Weight: 129.3836
Canonical SMILES: C(Cl)Br
InChI: InChI=1S/CH2BrCl/c2-1-3/h1H2
InChIKey: JPOXNPPZZKNXOV-UHFFFAOYSA-N
EINECS: 200-826-3
Product Categories: Pharmaceutical Intermediates; Organics; Method 601; 600 Series Wastewater Methods; 8000 Series Solidwaste Methods; ChloroEPA; Method 601EPA; Method 8010EPA; Method 8021More...Close...; Alkyl; Halogenated Hydrocarbons; Organic Building Blocks; A-BAlphabetic; Alpha Sort; B; BI - BZChemical Class; BromoChemical Class; Chloro; Halogenated; Volatiles/ Semivolatiles
storage temp.: 2-8 °C
Water Solubility: 9 g/L (20 ºC)
Stability: Stable, but may discolour in light. Incompatible with aluminium, magnesium, zinc, calcium, strong oxidizing agents.
Index of Refraction: 1.465
Molar Refractivity: 19.26 cm3
Molar Volume: 69.6 cm3
Surface Tension: 29.7 dyne/cm
Density: 1.858 g/cm3
Flash Point: 11 °C
Enthalpy of Vaporization: 29.44 kJ/mol
Boiling Point: 65.1 °C at 760 mmHg
Vapour Pressure: 172 mmHg at 25 °C
Appearance: white to light yellow crystal powder
Melting Point: -88 °C(lit.)
Classification Code of Chlorobromomethane (CAS NO.74-97-5): Drug / Therapeutic Agent; Mutation data; TSCA Flag T [Subject to the Section 4 test rule under TSCA]
Chlorobromomethane (CAS NO.74-97-5) was invented for use in fire extinguishers by the Germans during the mid-40s, in an attempt to create a less-toxic, more effective alternative to carbon tetrachloride. This was a concern in aircraft and tanks as carbon tetrachloride produced highly toxic by-products when discharged onto a fire. CBM was slightly less toxic, and used up until the late 1960s, being officially banned by the NFPA for use in fire extinguishers in 1969, as safer and more effective agents such as halon 1211 and 1301 were developed.
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LC50 | inhalation | 12030mg/m3/7H (12030mg/m3) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: MUSCLE WEAKNESS LUNGS, THORAX, OR RESPIRATION: DYSPNEA | Journal of Industrial Hygiene and Toxicology. Vol. 29, Pg. 382, 1947. |
mouse | LD50 | oral | 4300mg/kg (4300mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC | Journal of Industrial Hygiene and Toxicology. Vol. 29, Pg. 382, 1947. |
rabbit | LD50 | skin | > 20gm/kg (20000mg/kg) | National Technical Information Service. Vol. AD-A062-138, | |
rat | LCLo | inhalation | 28800ppm/15M (28800ppm) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX) BEHAVIORAL: TREMOR | U.S. Army, Chemical Corps Medical Laboratories Research Reports. Vol. #113, Pg. 1952, |
rat | LD50 | oral | 5gm/kg (5000mg/kg) | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 390, 1969 |
Reported in EPA TSCA Inventory.
Mildly toxic by ingestion and inhalation. Mutation data reported. This material has a narcotic action of moderate intensity, although of prolonged duration. Animals exposed for several weeks to 1000 ppm had blood bromide levels as high as 350 mg/100 g. Therefore, until further data are available, it should be considered at least as toxic as carbon tetrachloride and more than minimal exposure to its vapors should be avoided. Dangerous; when heated to decomposition it emits highly toxic fumes of Br− and Cl−.
Hazard Codes: Xi,N,XnT,F
Risk Statements: 37/38-41-59-36/37/38-20-39/23/24/25-23/24/25-11
R37/38:Irritating to respiratory system and skin.
R41:Risk of serious damage to the eyes.
R59:Dangerous to the ozone layer.
R36/37/38:Irritating to eyes, respiratory system and skin.
R20:Harmful by inhalation.
R39:Danger of very serious irreversible effects.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
R11:Highly flammable.
Safety Statements: 26-39-59-37/39-45-36/37
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S39:Wear eye / face protection.
S59:Refer to manufacturer / supplier for information on recovery / recycling.
S37/39:Wear suitable gloves and eye/face protection.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37:Wear suitable protective clothing and gloves.
RIDADR: UN 1887 6.1/PG 3
WGK Germany: 2
RTECS: PA5250000
Hazard Note: Irritant
HazardClass: 6.1(b)
PackingGroup: III
OSHA PEL: TWA 200 ppm
ACGIH TLV: TWA 200 ppm
DFG MAK: 200 ppm (1100 mg/m3)
DOT Classification: 6.1; Label: KEEP AWAY FROM FOOD
For occupational chemical analysis use NIOSH: Hydrocarbons, halogenated, 1003.
Chlorobromomethane (CAS NO.74-97-5), its Synonyms are Bromochloromethane ; Chloromethyl bromide ; Fluorocarbon 1011 ; Methane, bromochloro- ; Methylene chlorobromide ; Mil-B-4394-B ; Mono-chloro-mono-bromo-methane .