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Cas Database |
| Name |
1,4-Dibromo-2-butene |
EINECS | 230-219-9 |
| CAS No. | 6974-12-5 | Density | 1.867 g/cm3 |
| PSA | 0.00000 | LogP | 2.33240 |
| Solubility | N/A | Melting Point |
48-51 °C(lit.) |
| Formula | C4H6Br2 | Boiling Point | 203 °C at 760 mmHg |
| Molecular Weight | 213.9 | Flash Point | 71.9 °C |
| Transport Information | UN 2923 8/PG 2 | Appearance | white crystal |
| Safety | 26-36/37/39-45 | Risk Codes | 25-34 |
| Molecular Structure |
|
Hazard Symbols |
 T
|
| Synonyms |
1,4-dibromobut-2-ene;NSC 23187; |
Article Data | 15 |
1,4-Dibromo-2-butene Chemical Properties
Chemical Name: trans-1,4-Dibromo-2-butene
IUPAC NAME: (E)-1,4-Dibromobut-2-ene
CAS No.: 6974-12-5
EINECS: 212-472-7
RTECS: EM4725000
Molecular Formula: C4H6Br2
Molecular Weight: 213.9 g/mol
Melting Point: 48-51 °C(lit.)
Density: 1.867 g/cm3
Flash Point: 71.9 °C
Boiling Point: 203 °C at 760 mmHg
Storage temp.: 0-6°C
Following is the structure of 1,4-Dibromo-2-butene (6974-12-5):
The chemical synonymous of 1,4-Dibromo-2-butene (6974-12-5) are trans-1,4-Dibromobut-2-ene ; 1,4-Dibromo-2-butene ; 1,4-Dibromo-2-butylene ; 1,4-Dibromo-2-buten ; TL 80 ; tl80 ; 1,4-Dibromobut-2-ene ; Cis-1,4-DibromoButene
1,4-Dibromo-2-butene Uses
The major use of 1,4-Dibromo-2-butene (6974-12-5) is as an intermediate in organic synthesis.
1,4-Dibromo-2-butene Toxicity Data With Reference
| 1. | skn-rbt 1 mg/24H | AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. 10 (1954),61. | ||
| 2. | eye-rbt 50 µg open SEV | AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. 10 (1954),61. | ||
| 3. | orl-rat LD50:75 mg/kg | AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. 10 (1954),61. | ||
| 4. | ihl-mus LCLo:1260 mg/m3/10M | NDRC** National Defense Research Committee, Office of Scientific Research and Development, Progress Report NDCrc-132,Aug ,1942. | ||
| 5. | ipr-mus LDLo:4 mg/kg | CBCCT* “Summary Tables of Biological Tests“ National Research Council Chemical-Biological Coordination Center. 5 (1953),338. |
1,4-Dibromo-2-butene Safety Profile
Poison by ingestion and intraperitoneal routes. Moderately toxic by inhalation. A skin and severe eye irritant. When heated to decomposition it emits toxic fumes of Br−. See also BROMIDES.
Hazard Codes:
T: Toxic .gif){kind=small}
Risk Statements about 1,4-Dibromo-2-butene (6974-12-5):
R23/25 Toxic by inhalation and if swallowed.
R34 Causes burns.
Safety Statements about 1,4-Dibromo-2-butene (6974-12-5):
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S28A After contact with skin, wash immediately with plenty of water.
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection.
S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Attentions:
1. Storage: Do not store in direct sunlight. Store in a tightly closed container. Store in a dry area. Corrosives area. Keep refrigerated. (Store below 4°C/39°F.)
2. Handling: Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
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