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| CAS No.: | 74-83-9 |
|---|---|
| Name: | Methyl bromide |
| Molecular Structure: | |
|
|
|
| Formula: | CH3Br |
| Molecular Weight: | 94.9388 |
| Synonyms: | Detia gas EX-M;Metylu bromek [Polish];Methylbromid [German];Meth-O-Gas;Methogas;Methane, bromo-;Kayafume;Dowfume MC-2 Fumigant;Brom-O-Sol;Methyl fume;MBX;Terr-O-Gas 100;Dowfume MC-2R;Methyl bromide [UN1062] [Poison gas];Pestmaster;Bromometano [Italian];EPA Pesticide Chemical Code 053201;M-B-R 98;Zytox;Mbc-33 Soil Fumigant;R 40B1;Methyl bromide as a structural fumigant;Terr-O-Cide II;Dowfume MC-33;Bromur di metile [Italian];Brom-methan [German];Bromomethane;RCRA waste number U029;Terabol;Methane,bromo-;Dowfume MC-2;Superior Methyl Bromide-2;Pestmaster Soil Fumigant-1;Edco;Celfume;Drexel Plant Bed Gas;Metafume; |
| EINECS: | 200-813-2 |
| Density: | 1.63 g/cm3 |
| Melting Point: | -94 °C(lit.) |
| Boiling Point: | 3.8 °C at 760 mmHg |
| Flash Point: | -34°C |
| Solubility: | 1.522 g/100 mL in water |
| Appearance: | colourless gas with a chloroform-like odour |
| Hazard Symbols: |
 T,  N,  Xn,  F, F+
|
| Risk Codes: | 23/25-36/37/38-48/20-50-59-68-38-20/22-11-67-66-19-12 |
| Safety: | 15-27-36/39-38-45-59-61-36/37-26-24-16-7 |
| Transport Information: | UN 1062 |
| PSA: | 0.00000 |
| LogP: | 1.01110 |
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- 71-91-0
tetraethylammonium bromide
- 333-27-7
methyl trifluoromethanesulfonate
A
- 74-83-9
methyl bromide
B
- 35895-69-3
tetraethylammonium trifluoromethanesulphonate
| Conditions | Yield |
|---|---|
| In acetonitrile at 20℃; for 0.583333h; Temperature; | A n/a B 100% |
| Conditions | Yield |
|---|---|
| With bromine In acetonitrile one-electron oxidn. of cis-Co complex by Br2 at 298 K; monitored by (1)H-NMR; | A 99% B <1 C 0.24% |
| Conditions | Yield |
|---|---|
| With bromine In acetonitrile one-electron oxidn. of trans-Co complex by Br2 at 298 K; monitored by (1)H-NMR; | A 99% B 0.15% C <1 |
| Conditions | Yield |
|---|---|
| In tetrahydrofuran-d8 at 55℃; for 2h; | A n/a B 98% |
| Conditions | Yield |
|---|---|
| With carbon monoxide In further solvent(s) Irradiation (UV/VIS); Irradiation of complex at 350-380 nm under 20 atm of CO in CBrCl3;; | A 81-87 B 97% C 78-85 D <4 E >65 |
- 66-27-3
Methyl methanesulfonate
- 2857-97-8
trimethylsilyl bromide
A
- 74-83-9
methyl bromide
B
- 10090-05-8
trimethylsilyl methanesulfonate
| Conditions | Yield |
|---|---|
| for 6h; Heating; | A 95% B 96.5% |
| Conditions | Yield |
|---|---|
| decompn. at 100°C in vac. of about 10 Torr; distn. from 130 to 134°C at 13 Torr; crystn. by cooling; | A n/a B 96% |
| decompn. at 100°C in vac. of about 10 Torr; distn. from 130 to 134°C at 13 Torr; crystn. by cooling; | A n/a B 96% |
| beim Stehenlassen; |
- 66-27-3
Methyl methanesulfonate
- 506-96-7
Acetyl bromide
A
- 74-83-9
methyl bromide
B
- 5539-53-7
Acetyl methanesulfonate
| Conditions | Yield |
|---|---|
| at 100 - 110℃; for 1h; | A 95% B 55% |
| Conditions | Yield |
|---|---|
| With boron tribromide; (N,N'-ethylenebis(3,5-di-tert-butylsalicylideneimine))AlBr In chloroform-d1; hexane at 20℃; for 0.5 - 24h; Product distribution / selectivity; | 88% |
| With boron tribromide; salophen(tBu)AlBr In chloroform-d1; hexane at 20℃; for 0.5 - 24h; Product distribution / selectivity; | 82% |
| With boron tribromide; (N,N'-propylenebis(3,5-di-tert-butylsalicylideneimine))AlBr In chloroform-d1; hexane at 20℃; for 0.5 - 24h; Product distribution / selectivity; | 78% |
- 50370-56-4(1R,2S,3S,5S)-3-(4-Fluorophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylic acid methyl ester
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- 104987-11-3Tacrolimus
- 141-53-7Sodium formate
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- Total:23 Page 1 of 1 1
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Consensus Reports
Standards and Recommendations
ACGIH TLV: TWA 1 ppm (skin); Not Classifiable as a Human Carcinogen
DFG MAK: Confirmed Animal Carcinogen with Unknown Relevance to Humans
NIOSH REL: (Monohalomethanes) Reduce to lowest level
Analytical Methods
Specification
The Methyl bromide is an organic compound with the formula CH3Br. The IUPAC name of this chemical is bromomethane. With the CAS registry number 74-83-9, it is also named as DL-Methylbromide. The product's category is Organics. Besides, it is colourless gas with a chloroform-like odour.
The Methyl bromide is a recognized ozone-depleting chemical. It is used extensively as a pesticide. It is widely applied as a soil sterilant, mainly for production of seed but also for some crops such as strawberries and almonds. The Methyl bromide is also a precursor in the manufacture of other chemicals as a methylating agent, and has been used as a solvent to extract oil from seeds and wool.
Physical properties about Methyl bromide are: (1)ACD/LogP: 1.15; (2)ACD/LogD (pH 5.5): 1.15; (3)ACD/LogD (pH 7.4): 1.15; (4)ACD/BCF (pH 5.5): 4.39; (5)ACD/BCF (pH 7.4): 4.39; (6)ACD/KOC (pH 5.5): 100.36; (7)ACD/KOC (pH 7.4): 100.36; (8)Index of Refraction: 1.409; (9)Molar Refractivity: 14.41 cm3; (10)Molar Volume: 58.2 cm3; (11)Polarizability: 5.71×10-24cm3; (12)Surface Tension: 20.6 dyne/cm; (13)Density: 1.63 g/cm3; (14)Enthalpy of Vaporization: 23.91 kJ/mol; (15)Boiling Point: 3.8 °C at 760 mmHg; (16)Vapour Pressure: 1590 mmHg at 25°C.
Preparation: this chemical can be prepared by methanol. This reaction will need reagent naphthalene and bromine.
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Uses of Methyl bromide: it can be used to produce 1,4-dimethyl-pyridinium; bromide by heating. It will need reagent ethanol with reaction time of 10 hours.
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When you are using this chemical, please be cautious about it as the following:
It is highly flammable and harmful by inhalation and if swallowed. It is toxic by inhalation and if swallowed and danger of serious damage to health by prolonged exposure through inhalation. Please keep container tightly closed, keep away from heat and keep away from sources of ignition - No smoking. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical is irritating to eyes, respiratory system and skin. It may form explosive peroxides. It very toxic to aquatic organisms and vapours may cause drowsiness and dizziness. It is possible risk of irreversible effects. When you are using it, wear suitable gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible). Please avoid release to the environment. Refer to special instructions/safety data sheet.
You can still convert the following datas into molecular structure:
(1)SMILES: BrC
(2)InChI: InChI=1/CH3Br/c1-2/h1H3
(3)InChIKey: GZUXJHMPEANEGY-UHFFFAOYAV
(4)Std. InChI: InChI=1S/CH3Br/c1-2/h1H3
(5)Std. InChIKey: GZUXJHMPEANEGY-UHFFFAOYSA-N
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| child | LCLo | inhalation | 1gm/m3/2H (1000mg/m3) | BLOOD: CHANGE IN CLOTTING FACTORS | Nippon Hoigaku Zasshi. Japanese Journal of Legal Medicine. Vol. 23, Pg. 241, 1969. |
| dog | LDLo | oral | 500mg/kg (500mg/kg) | CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP GASTROINTESTINAL: NAUSEA OR VOMITING | National Technical Information Service. Vol. OTS0528834, |
| guinea pig | LCLo | inhalation | 300ppm/9H (300ppm) | BEHAVIORAL: MUSCLE WEAKNESS LUNGS, THORAX, OR RESPIRATION: "FIBROSIS, FOCAL (PNEUMOCONIOSIS)" SKIN AND APPENDAGES (SKIN): HAIR: OTHER | U.S. Public Health Service, Public Health Bulletin. Vol. 185, Pg. 1, 1929. |
| human | TCLo | inhalation | 35ppm (35ppm) | BEHAVIORAL: ANOREXIA (HUMAN SKIN AND APPENDAGES (SKIN): CORROSIVE: AFTER TOPICAL EXPOSURE GASTROINTESTINAL: NAUSEA OR VOMITING | Industrial Medicine. Vol. 11, Pg. 575, 1942. |
| human | TDLo | skin | 35gm/m3/40M-I (35000mg/m3) | SKIN AND APPENDAGES (SKIN): "DERMATITIS, IRRITATIVE: AFTER SYSTEMIC EXPOSURE" | Archives of Dermatology. Vol. 124, Pg. 917, 1988. |
| man | LCLo | inhalation | 60000ppm/2H (60000ppm) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION GASTROINTESTINAL: NAUSEA OR VOMITING | British Journal of Industrial Medicine. Vol. 2, Pg. 24, 1945. |
| mouse | LC50 | inhalation | 1540mg/m3/2H (1540mg/m3) | "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 81, 1982. | |
| rabbit | LC50 | inhalation | 28900mg/m3/30 (28900mg/m3) | Farmakologiya i Toksikologiya Vol. 8, Pg. 140, 1973. | |
| rat | LC50 | inhalation | 302ppm/8H (302ppm) | BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) | Toxicology and Applied Pharmacology. Vol. 81, Pg. 183, 1985. |
| rat | LD50 | oral | 214mg/kg (214mg/kg) | Toxicology and Applied Pharmacology. Vol. 72, Pg. 262, 1984. | |
| rat | LD50 | subcutaneous | 135mg/kg (135mg/kg) | Industrial Health. Vol. 26, Pg. 101, 1988. |