CETYLDIMETHYL BETAINE

PRODUCT IDENTIFICATION
CAS NO.

693-33-4

CETYL DIMETHYLBETAINE

EINECS NO.

211-748-4

FORMULA RN+(CH3)2CH2COO-
MOL WT.  

H.S. CODE

2923.90

TOXICITY

Oral rat LD50: 1620 mg/kg
SYNONYMS (Carboxylatomethyl)hexadecyldimethylammonium;
(Carboxymethyl)hexadecyldimethylammonium hydroxide, inner salt; N-(carboxymethyl)-N,N-dimethyl-1-Hexadecanaminium, hydroxide, inner salt; Cetyl betaine; N-(Carboxymethyl)-N,N-dimethyl-1-hexadecanaminium hydroxide inner salt; Hexadecylbetaine; N,N-Dimethyl-N-hexadecylglycine;
SMILES C16 Alkyl Dimethyl amine

CLASSIFICATION

SURFACTANTS /

PHYSICAL AND CHEMICAL PROPERTIES (30% AQ. SOLUTION)
PHYSICAL STATE Clear to pale yellow  liquid

MELTING POINT

 6 C
BOILING POINT 100 C
SPECIFIC GRAVITY 1.02

SOLUBILITY IN WATER

 Soluble
pH

8.5 - 9.5 (10% Aq. solution)

VISCOSITY

2,500 - 3,000 cps at 25 C

AUTOIGNITION

 

REFRACTIVE INDEX

 

NFPA RATINGS Health: 1; Flammability: 1 ; Reactivity: 0
FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Amphoteric surfactants have dual functional groups (both acidic and basic groups) in the same molecule. They are polar solvents that have a high solubility in water but a poor solubility in most organic solvents. They are electrically neutral but carries positive and negative charges on different atoms in an aqueous solution. Depending on the composition and conditions of pH value, the substances can have anionic or cationic properties. In the presence of acids, they will accept the hydrogen ions but they will donate hydrogen ions to the solution in the presence of bases, which balances the pH. Such actions make buffer solutions which resist change to the pH. In the detergency ability amphoteric surfactants which change their charge according to the pH of the solution affects properties of foaming, wetting and detergentcy through a surface action that exerts both hydrophilic and hydrophobic properties. In biochemistry amphoteric surfactant is used as a detergent for purifying, cleansing and antimicrobial effects. Alkylbetains and aminoxides are amphoteric surfactants.

Members of amphoteric surfactants

  • 2-Alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine
  • Alkyldimethyl amine oxide
  • Cocoamine oxide
  • Cocoamphocarboxyglycinate
  • Cocoamphopolycarboxyglycinate
  • Cocodimethylamine oxide
  • Cocoiminoglycinate
  • Cocoiminopropionate
  • Cocoylamidepropyldimethyl grycine
  • Lauryl betaine
  • Lauryldimethyl amine oxide
  • Laurylhydroxy sulfobetain
  • Laurylamide propyldimethyl grycine
  • Lauryldimethyl betaine
  • Octyliminodipropionate
  • Oleylamphopolycarboxyglycinate
  • Stearyl betaine
  • Tallowamine oxide
  • Tallowamphopolycarboxyglycinate
  • Tetradecyldimethyl amine oxide
SALES SPECIFICATION

ACTIVE MATTER

25.0% min

TOTAL SOLIDS

30.0% min

SODIUM CHLORIDE

5.5% max

pH

8.5 - 9.5 (10% Aq. solution)

COLOR (GARDNER)

2 max

TRANSPORTATION
PACKING 200kgs in Drum
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
This compound is a mild amphoteric surfactant derived from C16 Alkyl dimethyl amine. It is compatible with anionic, nonionic and cationic surfactants
'Amphoteric' is the descrition of the compounds having both acidic (e.g., carboxylate group) and basic (e.g., amine group) functional groups in their molecules. It reacts as a base to form the R3N+CH2COOH ion in acidic solutions; it acts as an acid to form the R2NCH2COO- ion in basic solutions. In neutral solutions, the ion R3N+CH2COO- can exist (zwitterion).