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14. Wash the 1-bromobutane with 10 mL of 3 mol/dm3 sodium hydroxide solution to remove traces of the acid, separate the layers and store the proper layer. 1-bromobutane stays in lower layer. Sodium hydroxide removes traces of sulphuric acid. Figure 10. Mixture after washing with sodium hydroxide solution. 15.
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- Objective
- Background
- Experimental Procedure
- Physico-Chemical Properties
- GHS Pictograms
- International Chemical Identifier
- References
To produce n-butyl bromide from n-butyl alcohol, and to demonstrate the ability to carry out a substitution reaction in organic chemistry, specifically the conversion of an alcohol to an alkyl halide.
Reacting a primary alcohol with a hydrogen halide produces a primary alkyl halide. The reaction follows an SN2 mechanism, as the dehydration step is competitive. The reaction requires a strong acid to protonate the hydroxyl group. Aqueous HBr, HI or HBr gas can be used. In this experiment, the HBr is generatedin situ by reacting NaBr with H2SO4. Na...
In a 250 ml round-bottom flask, place 30 g of sodium bromide and 30 ml of water. Shake the flask until most of the salt has been dissolved. Add 18.5 g of butan-1-ol, and cool the flask to 5–10 ºC in an ice bath. Slowly add 25 ml of concentrated H2SO4. Place the flask with a reflux condenser and a trap adapted for gases containing NaOH solution (aqu...
This table collects data for the molecular weight (Mw), melting point (M.p.) boiling point (B.p.) and density of the reactives and compounds used in this laboratory experiment.
Hazard pictograms form part of the international Globally Harmonized System of Classification and Labelling of Chemicals (GHS) and are collected in the followinf Table for the chemical compounds used in this experiment.
The IUPAC InChI keyidentifiers for the main compounds used in this experiment are provided to facilitate the nomenclature and formulation of chemical compounds and the search for information on the Internet for these compounds.
Isac-García, J.; Dobado, J. A.; Calvo-Flores, F. G.; and Martínez-García, H. (2015). Experimental Organic Chemistry Laboratory Manual. Elsevier Science & Technology. ISBN: 978-0-12-803893-2Vogel, A.I., Furniss, B.S., Hannaford, A.J., Tatchell, A.R., and Smith, P.W.G. (1989). Vogel’s Textbook of Practical Organic Chemistry (Vogel’s Textbook series). Longman. ISBN: 9780470214145People also ask
How to remove sulphuric acid from 1-bromobutane?
What is the reaction for the synthesis of 1-bromobutane?
How do you remove H2SO4 from 1-bromobutane?
How do you know if 1-bromobutane is distilled?
Add 25 mL of water to the organic layer in the funnel. Invert the funnel and point into the fume hood and away from any other people. Remember to shake the funnel gently with venting. Separate and label each layer carefully. Wash the organic layer with 15 mL of saturated sodium bicarbonate solution and then again with 15 mL of saturated sodium ...
SECTION 2: Hazards identification 2.1. Classification of the substance or mixture Classification (SI 2019 No. 720) Physical hazards Flam. Liq. 2 - H225 Health hazards Skin Irrit. 2 - H315 Carc. 2 - H351 Repr. 1B - H360FD STOT SE 3 - H335 STOT RE 2 - H373 Environmental hazards Aquatic Chronic 2 - H411 2.2. Label elements EC number 203-691-9 ...
Product name : 1-Bromobutane Product Number : B59497 Brand : Sigma-Aldrich CAS-No. : 109-65-9 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratory chemicals, Synthesis of substances 1.3 Details of the supplier of the safety data sheet Company : Sigma-Aldrich Inc.
Product Name 1-Bromobutane Cat No. : AC106770000; AC106770010; AC106770025; AC106770050; AC106770500; AC106772500 CAS-No 109-65-9 Synonyms n-Butyl bromide Recommended Use Laboratory chemicals. Uses advised against Not for food, drug, pesticide or biocidal product use Details of the supplier of the safety data sheet Emergency Telephone Number
MSDS Name: 1-Bromobutane Catalog Numbers: AC106770000, AC106770010, AC106770050, AC106770500, AC106772500, AC219710000, AC219710050, AC219710500, B400-500 Synonyms: n-Butyl bromide. Company Identification: Fisher Scientific 1 Reagent Lane Fair Lawn, NJ 07410 For information, call: 201-796-7100 Emergency Number: 201-796-7100
