In the SI, the. angle of optical rotation is expressed in radians (rad). The optical rotation is measured on a layer of suitable thickness (optical path length. l. ) at the wavelength Î». and temperature T specified in the monograph. A typical optical path length is 100 mm, the most common. wavelength is 589 nm (Sodium D-Line), while the reference temperature is usually between 20-25 Â°C.
Cetearyl, Cetyl, Myristyl and Behenyl Alcohols are straight-chain alcohols. Isostearyl Alcohol is a branched chain alcohol. Cetearyl Alcohol is a mixture of mostly of Cetyl and Stearyl Alcohols, which are fatty alcohols that occur naturally in small quantities in plants and animals. Myristyl Alcohol is a 14 carbon chain. Cetyl Alcohol has 16 carbons, while Stearyl and Isostearyl Alcohols have 18 carbons.
That being said, sugar alcohols are confusing. Sugar alcohols have nothing to do with the type of alcohol in beer, wine or spirits, and they aren't sugars either. A sugar alcohol, such as sorbitol or xylitol, is an incompletely absorbed carbohydrate. Since they are incompletely absorbed, you get only some of the calories, and your blood sugar goes up less than if you had had the same amount of sweetness with regular sugar. A rough but reasonable rule of thumb is to count about half the grams of sugar alcohol as sugar, for the purposes of counting sugar grams.