This product is a yellow viscous liquid, resistant to hard water, acid, alkali and inorganic salts. It is used to emulsify and dissolve oils and other water-insoluble substances. Nonionic solubilizer. As a solubilizer and emulsifier for water-insoluble drugs or other fat-soluble drugs, it is used in semi-solid and liquid formulations [1].
Product name: polyoxyethylene castor oil
Foreign name: polyoxyethylene castor oil
Active substance content: ≥99%.
Product name: EL-n,HEL-n,n=10-130
Chemical composition: castor oil and ethylene oxide adduct
CAS number: 61791-12-6
Technical index:
Item: EL-20 EL-40 EL-80 HEL-20
Appearance: Yellow viscous liquid
PH:
Moisture %≤ : 1.0
Saponification price (mgKOH/g) 85-98 51-64 - 85-98
Cloud point (°C): - - >70 (5% brine) -
Density: 1.05 g/mL at 20 °C
Stability: Stable. Incompatible with storng oxidizing agents. 
EPA Chemical Substance Information: Castor oil, ethoxylated (61791-12-6).
Note: Hydrogenated polyoxyethylene castor oil.
Production method
Add 1 mol of castor oil to the reactor and add 0.3% solid potassium hydroxide equivalent to the mass of castor oil. Stir, heat up, until KOH is dissolved. Then replace the air in the kettle with N2. And through ethylene oxide, the reaction temperature is maintained at 160~180 °C, and the pressure is 0.15~0.2 MPa. Continue stirring until the pressure no longer drops. Cooling. The material was moved into a bleaching kettle, pH was adjusted to slightly acidic with acetic acid, 0.1% hydrogen peroxide was added for decolorization, and heat preservation was kept at 70 °C for 0.5 h. Finally, dehydrate under reduced pressure for 5 h. Cool the discharge. The reaction formula is as follows.
Application
EL-20 and HEL-20 can be used as spinning oil agents for acrylic fibers, etc., and can also be formulated as weaving oil agents, so that the sizing yarn is soft and smooth, easy to weave, and can also be used as emulsifier, diffusion agent, wetting agent, and HEL-20 has the characteristics of low coking at high temperature. EL-40 is an oil-in-water emulsifier, in the wool industry as crude oil, with good antistatic properties, and other antistatic agents mixed with better effect, this product is also used in ink, pharmaceutical, pesticide and other industries as an emulsifier. EL-80 can be used as acrylic, vinylon, polypropylene and other chemical fiber oil agent components, with antistatic and emulsifying effect, can be used as organophosphorus pesticide Leguo emulsifier, emulsion polymerization emulsifier, crude oil emulsifier, widely used in textile printing and dyeing, coatings, ink and other industries, but also used as a variety of oil emulsifier.
Packing: plastic gallbladder iron drum packaging, 190KGS/drum.
Storage and transportation: stored in a cool, ventilated, dry place, according to the general chemical transportation.
Security information
WGK Germany 1
RTECS number GO5661000

CAS NO:61791-12-6

EC NO:500-147-5

Molecular Formula:

Molecular Weight:

Synonyms:;cremophor el;castor oil ethoxylated;polyoxyethylene castor oil;Ethoxylated castor oil;PEG Castor oil;Emulsifier EL series;RO 40;RO series;BY series;Cremophor EL series;Castor Oil Ethoxylate;Emulsifier EL;Ethoxylated Castor Oil 10-50EO;

Molecular Structure: