CAS 16940-66-2 CAS No. 16940-66-2 Chemical Name: Sodium borohydride borohydride has a strong selective reduction, being able to selectively reduce a carbonyl group is to a hydroxyl group without reacting with the carbon-carbon double bond and triple bond reaction. A small amount of sodium borohydride can restore the nitrile to the aldehyde with the excess amount being reduced to the amine. Uses Sodium borohydride (NaBH4) is a versatile reducing agent used in a number of industrial processes. Major applications include organic and pharmaceutical synthesis, wastewater treatment, and paper pulp bleaching. Sodium borohydride plays such a significant role in organic synthesis. It is a good reducing agent which has stable performance and selective reduction. It can be used as the reducing agents of aldehydes, ketones and acid chlorides; also as foaming agent for plastic materials, hydrogenating agent of making dihydrostreptomycin, intermediate of making potassium borohydride, raw materials in synthesizing borane, as well as the treatment agent of paper industry and mercury-containing waste water. Sodium borohydride provides organic chemists a very convenient and mild means for reduction of aldehydes and ketones. Before this, people usually use metal/alcohol approach to reduce carbonyl compound. Sodium Releases hydrogen to blow in material.
Sodium borohydride(CAS:16940-66-2)
Supplier: PVP K30, PVP K17, PVP K90, crospovidone, 2-pyrrolidone, N-methyl-2-pyrrolidone, GAMMA-butyrolactone, sodium borohydride, benzaldehyde, pine oil, menthol crystal, methyl salicylate
Supplier: Butyllithium, lithium aluminium hydride, lithium borohydride, sodium methoxide powder, sodium methoxiode solution
1,3 Dichloro acetone 2. 4-Amino-1,2,4-triazole 3. 2 Mercapto 5 Methoxy Benzamedazole 4. 3 chloro propionyl chloride 5. 5 Chloro Valeryl Chloride 6. Acetyl chloride 7. Benzoyl chloride 8. Chloro acetyl chloride 9. Propionyl chloride 10. Pivaloyl Chloride 11. Para chloro benzoyl chloride 12. Boron trifluoride diethyl etherate 13. 2-chlorothiophene 14. Thiophene-2-aldehyde 15. 2,5-Dichlorothiophene 16. 2-Bromothiophene 17. 2-Methyl resorcinol 18. Thiophene 99% 19. 5-Chlorothiophene-2-carboxylic acid (Rivaroxaban Intermediate) 20. 2-Butyl-4-chloro-5-formyl-1H-imidazole (BCFI) (Losartan Intermediate) 21. Cyanuric chloride 22. Benzamidine HCL 23. Glucono Delta Lactone 24. Biphenyl 25. D (-) Tartaric acid 26. L (+) Tartaric acid 27. Cyanoacetic acid 70% 28. Benzylamine 29. 2,6-Diaminotoluene 30. Meta chlorotoluene 31. Di cyclohexylamine (DCHA) 32. 1,2 Dimethoxy ethane (Monoglyme) 33. 2 Methyl THF 34. Acetonitrile 35. Resorcinol 36. 1,4 Dioxane 37. Ethyl bromide 38. N Heptane 39. Diisopropylethylamine (DIPEA) 40. Di isopropyl ether (DIPE) 41. Diisopropylamine (DIPA) 42. Dimethylformamide (DMF) 43. N, N bis(2-chloroethyl) amine HCL 44. Tetra isopropyl titanates (TIPT) 45. Titanium isopropoxide 46. Titanium tetrachloride 47. Tert n butyl titanates 48. Poly butyl titanates 49. Titanium phosphate 50. Tetra octyl titanates 51. N-methyl-2-pyrrolidone (NMP) 52. Tetrahydrofuran (THF) 53. Triethylamine (TEA) 54. N N Dimethyl Acetamide (DMAC) 55. Iso Propyl Acetate (IPAC) 56. Chloro sulfonic acid 57. Ortho nitro chlorobenzene (ONCB) 58. Para nitro chlorobenzene (PNCB) 59. Niacin (Nicotinic acid) 60. Niacinamide (Nicotinamide) 61. Meta Chloro Anisole 62. Meta Bromo Anisole 63. Dibenzoyl-L-tartaric acid monohydrate OTHER PRODUCTS: 1. N pentane 2. Paraformaldehyde 96% 3. Propionaldehyde 4. Piperdine 5. Piperazine anhydrous 6. Pyridine 7. Sodium borohydride powder 8. Sodium metal 9. Sulphuryl chloride 10. Thionyl chloride 11. 1,2-dichloro ethane (EDC) 12. 1,3-dichloro acetone 13. 2,2-dimethoxy propane 14. 4-chlorobenzophenone 15. Alpha picoline 16. 2-bromobutane 17. Benzenesulfonylchloride (BSC) 18. Benzophenone 19. Benzyl chloride 20. Diglyme 21. Diethyl ether 22. Dimethyl carbonate 23. Dimethyl malonate 24. Dimethyl sulfoxide 25. Ethyl chloroformate 26. Ethyl formate 27. Fluorobenzene 28. Hydrazine hydrate HH 80% 29. Imidazole 30. Iso propyl acetate 31. Malonic acid 32. Methyl acrylic acid 33. Methane sulfonic acid 34. Methane sulfonyl chloride 36. Methyl ethyl ketone (MEK) 37. Methyl tert butyl ether (MTBE) 38. Mono chlorobenzene (MCB) 39. Meta aminophenol 40. N Heptane 41. N Hexane 42. N Propanol (NPA) 43. N, N-dimethyl acetamide (DAMC) 44. N, N-dimethylaniline 45. N Butanol 46. N methyl morpholine
Boron trifluoride bf3 Cas no.: 7637-07-2 Einecs no.: 231-569-5 Un no.: un1008 Purity: 99.5% Dot class: 2.3 Appearance: colorless, non-flammable and compressed gas Grade standard: industrial grade, electronic grade Chemical use: Bf3 could be sued as organic reaction catalyst, such as esterification, alkylate, polymerization, isomerization, sulfonate, nitration. Material for making boron halide, element boron, borane, sodium borohydride. Electron use: Ion implatation and adulteration in semiconductor device integrated circuit manufacturing.
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What are the characteristics of Schiff base, such as chelation, heat resistance, liquid crystal and intrinsic conductivity. The conductivity of Conjugated Poly (Schiff base) doped with iodine can be increased by about 8 orders of magnitude, which makes it reach the level of semiconductor. The doped materials have good stability, electrochemical activity and photoconductivity. In the conventional state, the molecular chain of poly (Schiff base) is relatively rigid, and the intermolecular force is also strong, so the polymer is insoluble and insoluble. However, the Schiff base synthesized by using trimethylol aminomethane and other solvents directly makes the Schiff base get rid of the difficult situation of polymer processing and characterization, and the conductivity increases. In order to improve the yield of Schiff base, it is necessary to synthesize Schiff base by the reaction of 3,5-dibromosalicylic aldehyde with trimethylolminomethane, and reduce Schiff base with anhydrous ethanol at room temperature. The results showed that the molar ratio of 3,5-dibromosalicylic aldehyde to trihydroxymethylaminomethane was 1 â?¶ 1, the reaction time was 30 min, the molar ratio of sodium borohydride to 3,5-dibromosalicylic aldehyde trihydroxymethylaminomethane Schiff base was 1.5 1, and the yield of reduced Schiff base was 81.4%.
