77503-27-6

Basic information

• Product Name: 9,10-dibromopalmitic acid
• Synonyms: 9,10-dibromopalmitic acid
• CAS NO: 77503-27-6
• Molecular Formula: C₁₆H₃₀Br₂O₂
• Molecular Weight: 414.22
• Mol File: 77503-27-6.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 454.9°C at 760 mmHg
• Flash Point: 228.9°C
• Appearance: /
• Density: 1.317g/cm³
• Vapor Pressure: 1.53E-09mmHg at 25°C
• Refractive Index: 1.504
• PKA: 4.78±0.10(Predicted)
• CAS DataBase Reference: 9,10-dibromopalmitic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 9,10-dibromopalmitic acid(77503-27-6)
• EPA Substance Registry System: 9,10-dibromopalmitic acid(77503-27-6)

Safety Data

• Hazardous Substances Data: 77503-27-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C16H30Br2O2/c1-2-3-4-8-11-14(17)15(18)12-9-6-5-7-10-13-16(19)20/h14-15H,2-13H2,1H3,(H,19,20)

Upstream product

• 29242-09-9 9,10-dihydroxy-hexadecanoic acid 
• 10030-73-6 (E)-9-hexadecenoic acid 
• 7726-95-6 bromine 
• 373-49-9 9-hexadecenoic acid 

Downstream Products

• 10030-73-6 (E)-9-hexadecenoic acid 
• 99208-90-9 15-hexadecyn-1-oic acid 

Relevant articles and documents

Preparation method of long-chain diacid

The invention provides a preparation method of long-chain diacid, which comprises the following steps of: (S1) carrying out an addition reaction on olefine acid or an ester derivative thereof serving as a raw material and liquid bromine to obtain dibromo carboxylic acid or an ester derivative thereof; (S2) carrying out an elimination reaction on the dibromo carboxylic acid or ester derivative thereof under the action of sodium amide to obtain alkynyl-terminated carboxylic acid or an ester derivative thereof; (S3) carrying out an addition reaction on the alkynyl-terminated carboxylic acid or the ester derivative thereof and diborane to obtain borane or boric acid containing carboxyl or ester group; and (S4) oxidizing the borane or boric acid to obtain long-chain diacid. According to the invention, olefine acid is used as a raw material, is easily available in source and low in price, so that the production cost of the product is very low; and meanwhile, the raw materials used in the synthesis process do not contain precious metals or other expensive reagents, so that the synthesis process is suitable for industrial amplification production, and the defect that the method in the prior art is not environment-friendly, not suitable for industrial production and high in preparation cost is overcome.