542-42-7

Basic information

• Product Name: CALCIUM PALMITATE
• Synonyms: calciumdipalmitate;Hexadecanoicacid,calciumsalt;CALCIUM PALMITATE;Palmitate (calcium salt);OMMAWEGMHLHTAV-UHFFFAOYSA-N
• CAS NO: 542-42-7
• Molecular Formula: 2C₁₆H₃₁O₂*Ca
• Molecular Weight: 550.91
• EINECS: 208-811-3
• Mol File: 542-42-7.mol
• Article Data: 2

Chemical Properties

• Melting Point: decomposes above 155℃ [MER06]
• Boiling Point: 340.6 °C at 760 mmHg
• Flash Point: 154.1 °C
• Appearance: /
• Vapor Pressure: 3.28E-05mmHg at 25°C
• Water Solubility: insoluble H2O, alcohol, ether, acetone; slightly soluble benzene [MER06]
• CAS DataBase Reference: CALCIUM PALMITATE(CAS DataBase Reference)
• NIST Chemistry Reference: CALCIUM PALMITATE(542-42-7)
• EPA Substance Registry System: CALCIUM PALMITATE(542-42-7)

Safety Data

• Hazardous Substances Data: 542-42-7(Hazardous Substances Data)

Usage

Description

Calcium palmitate, also known as palmitic acid calcium salt, is a white or pale yellow powder derived from the synthesis of saturated fatty acids by plants and animals. It is a common 16-carbon saturated fat that represents 10-20% of the normal dietary fat intake and is one of the major components of gallstones. Calcium palmitate is formed when calcium ions combine with the anion of palmitic acid, which is observed at physiological pH.

Uses

Used in Lubrication Industry:
Calcium palmitate is used as a thickening agent for lubricating oils, enhancing their viscosity and performance characteristics.
Used in Textile Industry:
Calcium palmitate is used as a waterproofing agent for fabrics, providing water resistance and improving the durability of the material.
Used in Grease Industry:
Calcium palmitate is used as a thickener for lubricating greases, increasing their consistency and reducing the likelihood of leakage or spillage.
Used in Chemical Industry:
Calcium palmitate is used as a corrosion inhibitor in halohydrocarbons, protecting these chemicals from degradation and extending their shelf life.

InChI:InChI=1/2C16H32O2.Ca/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16(17)18;/h2*2-15H2,1H3,(H,17,18);/q;;+2/p-2

Upstream product

• 57-10-3 1-hexadecylcarboxylic acid 

Downstream Products

• 502-73-8 palmitone 

Relevant articles and documents

Characterisation of metal carboxylates by Raman and infrared spectroscopy in works of art

This work introduces the complementary use of μ-Raman and μ-Fourier transform infrared (IR) spectroscopy for the detection of specific carbon chains and cations for the identification of metal carboxylates within oil paint microsamples. Metal carboxylates (metal soaps) form naturally when free fatty acids react with metal cations and may also be found as additives or degradation products. Twenty-two metal carboxylates were synthesised, and their spectra assembled in a reference database. Metal salts of cations commonly present in oil paintings were used, including lead, zinc, calcium, cadmium, copper and manganese. The fatty acids selected were the saturated acids palmitic (C1 6:0) and stearic (C18:0) and the polyunsaturated oleic acid (C1 8:1). Azelaic acid (C9 diacid), a product resulting from autoxidation of polyunsaturated acids, was also included. Metal carboxylates were characterised by Raman and IR spectroscopy, and their structures were confirmed by X-ray diffraction. Raman and IR spectroscopy proved to be complementary techniques for a full identification of the metal carboxylates in complex aged paint. Raman enables the differentiation of the carbon chain length in the C-C stretching region (1120-1040 cm-1), and IR distinguishes the metal cation in the COO- stretching absorption region (1650-1380cm-1). Principal component analysis was applied to the spectra in order to facilitate a fast and accurate method to discriminate between the different metal carboxylates and to aide in their identification. Finally, spectra from case studies were successfully projected in the principal component analysis models built, enabling a higher confidence level for the identification of copper palmitate and copper azelate in two 19th-century Portuguese oil paintings.