Cetomacrogol, Form : Powder

Synonyms: Cetomacrogol, Polyoxyethylene (10) cetyl ether, Polyethylene glycol hexadecyl ether
CAS Number: 9004-95-9, Molecular Weight: Varies, Chemical Formula: HO(C2H4O)nC16H33, EINECS EC Number: 500-014-1, FEMA: ----,

CM 1000 word is used for 2 different items:
1. Cetomacrogol CM 1000
2. BELSIL™ CM 1000 of Wacker

Cetomacrogol 1000 is the tradename for polyethylene glycol hexadecyl ether, which is nonionic surfactant produced by the ethoxylation of cetyl alcohol to give a material with the general formula HO(C2H4O)nC16H33. Several grades of this material are available depending of the level of ethoxylation performed, with repeat units (n) of polyethylene glycol varying between 2 and 20 and n = about 20 is a favored grade. It is used as a solubilizer and emulsifying agent in foods, cosmetics, and pharmaceuticals, often as an ointment base, and also as a research tool. It is used as O/W emulsifier for creams/lotions.

Specifications of Cetomacrogol 1000 or CM 1000 or Polyethylene glycol hexadecyl ether:
Appearance: White/cream waxy pastilles.
Description: A cream-coloured, waxy, unctuous mass, pellets, or flakes; when heated, it melts to a brownish yellow, clear liquid; odorless or almost odorless.
Solubility: Soluble in water, ethanol (~750 g/l), and acetone; practically insoluble in light petroleum.
Melting point: Not lower than 38C.
Acid value: Not more than 0.5.
Alkalinity: Dissolve 2 g in 20 mL of carbon-dioxide-free water, add 1 drop of phenolphthalein/ethanol, and titrate with hydrochloric acid (0.1 mol/l); not more than 0.5 mL is required to obtain a pink colour.
Hydroxyl value: Use 10 g,
Saponification value: Use 10 g; not more than 1.
Water: not more than 10 mg/g.