Potassium stearate

Like most other metal carboxylates, the calcium carboxylate (Ca(RCOO)2) formed during Equation (6.19) readily forms a soap , the name arising since its aqueous solutions feel slippery and soapy to the touch. The other commonly encountered metal carboxylates are the major components of household soap, which is typically a mixture of potassium stearate and potassium palmitate (the salts of stearic and palmitic acids). 

These figures are in approximate agreement with values calculated -with the aid of the Freundlich adsorption isotherm (see p. 134) but no definite conclusions may be drawn from them since the actual area of liquid-liquid interface in all probability was variable being dependent on the amount of emulsifying agent present. More recently the quantity of various soaps required to form a stable emulsion of kerosene in water has been determined by Grifiin (J.A.C.8. XLV. 1648, 1923) for sodium oleate, potassium stearate and potassium palmitate and by der Meulen and Riemann ibid. XLVI. 876, 1924) for sodium ricinoleate. 

In another set of surfactant systems comprised of 50% potassium stearate (KS) and water, 50% potassium palmitate (KP) and water, and 50% 1 1 KS/l-octadecanol (KSO) and water, the Norrish II reactions of the homologous series of 2- and sym-alkanones (2-105 and s-105, respectively, with n as the total number of carbon atoms in the alkanone) have been investigated [309]. 

Preparation of Samples. PVC Latex. Polymerization was performed using chemical initiation (persulfate-metabisulfite) and radiochemical initiation (y-irradiation from 60Co mean dose rate 10,000 rads/hour). Emulsifier was potassium stearate. 

Figure 3. Effect of various straight-chain potassium C18 carboxylate soaps upon mechanical stability of natural rubber latex (2) (KCt8) potassium stearate (KC18) potassium oleate (KC18") potassium elaidate (KC18Z) potassium linoleate (KC=ZZ) potassium linolenate (KC1H12(oli)) potassium 12-hydroxy stearate ...

Dihexadecyl-sn-glycero-3-phosphocholine (DHPC) was obtained from Fluka Chemical Corp. (Hauppauge, NY) and 9-heptadecanone (9HP) was from Aldrich (Milwaukee, WI) they were used as received. The preparation of 5-oxo potassium stearate (5-oxo KSA) and 12-oxo potassium stearate (12-oxo KSA) has been described before (10). 

Figure 3 Infrared spectra (1800 to 1600 cm 1) of 5-oxo potassium stearate (5-oxo KSA) incorporated in hydrated DHPC bilayers in the absence (—) and presence of 45 mol % cholesterol (—) (A) spectra recorded at 22 C, and (B) spectra recorded at 53 C. The broad bands at 1703 cm 1 (A) and 1705 cm 1 (B) are due to the COOH group of stearic acid (see Text).

DHPC l -dihexadecyl-sn-glycero-3-phosphocholine KSA potassium stearate 5-oxo KSA 5-oxo potassium stearate 12-oxo KSA 12-oxo potassium stearate 9HP 9-heptadecanone Tc temperature of the gel-to-liquid crystal phase transition of DHPC bilayers 43.41C... 

These investigations were all conducted, using Co y radiation, in the laboratories of the Japan Atomic Energy Research Institute in Takasaki (Konishi et ai., 1974). The flow sheet of the apparatns used is shown in Fig. 6. The polymerization vessel was a 500-ml stainless steel autoclave equipped with a variable motor speed driven propeller. The effect of the reaction conditions on the rate of polymerization was studied using a number of emulsihers. The potassium salts of a number of fatty acids gave tbe highest rates, potassium stearate being the best. The rate was found to be linearly proportional to the ethylene pressure. 

When the true structure of these ortho ster derivatives was finally recognized, Freudenberg and Scholz reported that the new crystalline methyl maltoside heptaacetate contained one acetyl group bound differently from the other six on distillation of the substance with potassium stearate in alcoholic solution only six acetyl groups were removed in the form of ethyl acetate, which was determined quantitatively in the distillate. The presence of the seventh acetyl group was revealed by the... 

Anonymous. Final report of the safety assessment of lithium stearate, aluminum distearate, aluminum stearate, aluminum tristearate, ammonium stearate, calcium stearate, magnesium stearate, potassium stearate, sodium stearate, and zinc stearate. ] Am Coll Toxicol 1982 1 143-177. 

Polyethylene Glycol Distearate 9005-08-7 Potassium Stearate 593-29-3 Resorcin 108-46-3... 

Figure 9.6 Structures adopted by sodium or potassium stearate (see Figure 9.5) a micelle in water (upper drawing) and a reverse micelle in oil (lower drawing). Inside the micelle hydrophobe molecules, drawn in green, can be solvated.

A/G No. 6 antiverm (25%) 4% sodium stearate, 2% potassium stearate 39 20% diethylphthalate, 10% hardened ground-nut oil... 

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