TRANS-11-OCTADECENOIC ACID Property

Melting point:

44℃

Boiling point:

397.91°C (estimate)

Density 

0.8563

refractive index 

1.4472 (589.3 nm 50℃)

Flash point:

113 °C

storage temp. 

Sealed in dry,Store in freezer, under -20°C

solubility 

Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)

pka

4.78±0.10(Predicted)

form 

Liquid

color 

Clear Colourless

Merck 

13,9965

CAS DataBase Reference

693-72-1(CAS DataBase Reference)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

1

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

TRANS-11-OCTADECENOIC ACID Chemical Properties,Usage,Production

Uses

Vaccenic Acid is a fatty acid found in Artemia salina that shows antimicrobial activity against a variety of microorganisms except Escherichia coli, Micrococcus luteus and Salmonella enteritidis.

Definition

ChEBI: Vaccenic acid is an octadecenoic acid having a double bond at position 11; and which can occur in cis- or trans- configurations. It is an octadecenoic acid and a straight-chain fatty acid. It is a conjugate acid of a vaccenate(1-).

Purification Methods

Crystallise the acid from acetone (m 45-45.5o) or aqueous MeOH (m 43.5-43.7o). The methyl ester has b 174-175o/5mm. [B.eseken & Hoagland Rec Trav Chim, Pays Bas 46 632 1927, Ahmad et al. J Am Chem Soc 70 3391 1948, IR: Rao & Daubert J Am Chem Soc 70 1102 1948.]