adjective
definition
Being, or containing a hydroxyl radical.
Examples of hydroxy in a Sentence
By eliminating the hydroxy groups in these acids the same nitrobenzoic acid is obtained, which yields on reduction an aminobenzoic acid different from the starting-out acid.
The facts suggested that the six carbon atoms formed a chain, and that a hydroxy group was attached to five of them, for it is very rare for two hydroxy groups to be attached to the same carbon atom.
He prepared the cyanhydrins of glucose and fructose, hydrolysed them to the corresponding oxy-acids, from which the hydroxy groups were split out by reduction; it was found that glucose yielded normal heptylic acid and fructose methylbutylacetic acid; hence glucose is an aldehyde alcohol, CH 2 OH (CH OH) 4 CHO, whilst fructose is a ketone alcohol CH 2 OH (CH OH) 3 CO.
It is a powerful reducing agent, and is frequently employed for this purpose in organic chemistry; thus hydroxy acids are readily reduced on heating with the concentrated acid, and nitro compounds are reduced to amino compounds, &c. It is preferable to use the acid in the presence of amorphous phosphorus, for the iodine liberated during the reduction is then utilized in forming more hydriodic acid, and consequently the original amount of acid goes much further.
Laudanine, C20H25N04, is very similar to laudanosine, differing in having three methoxy groups and one hydroxy instead of four methoxy.
This permits the writing of cinchonine, for example, as C,H6N CioH15(OH)N, the hydroxy group being in the part CioH15(OH)N, about which the constitution is uncertain.
The base contains butylated hydroxy toluene, (E321) an anti-oxidant.
We proceed to consider various simple derivatives of the alcohols, which we may here regard as hydroxy hydrocarbons, R OH, where R is an alkyl radical, either aliphatic or cyclic in nature.
Many also contain alpha hydroxy and other chemical components designed to remove the outermost layer of skin in an effort to make you appear younger.
The main difference between alpha hydroxy acids and beta hydroxy acid is their lipid (oil) solubility.
Alpha hydroxy acids are water soluble only, while beta hydroxy acid is lipid (oil) soluble.
Like alpha hydroxy acids, beta hydroxy acids can increase sensitivity to the sun, so sun block should be worn.
Made mainly from citrus acid, alpha hydroxy can be applied in concentrated form as a chemical peel by a qualified dermatologist.
Alpha hydroxy is also formulated in lower concentrations for daily home use.
Alpha hydroxy may appear on product labels as AHA, glycolic acid, or lactic acid.
Beta hydroxy is safe enough to use daily, but the effects are slower to appear.
Alpha hydroxy acid is a well known chemical exfoliant.
Alpha hydroxy acid is actually derived from fruit and milk sugars, but it can cause skin irritation.
For best results, pick a product with 8% to 15% alpha hydroxy acid.
Currently, Kiss My Face lotion for hands includes a wonderful organic grapefruit and bergamot Hand Crème and a Hand Alert repairing lotion containing alpha hydroxy acids, sunscreen, and moisturizers for smooth, beautiful hands.
Treat your skin to the sweet scent of peaches and cream with the Peaches and Cream 8% Alpha Hydroxy Face and Neck Moisturizer.
It contains Alpha Hydroxy Acids (AHAs), which help reduce the appearance of pores.
Not only is it beautifully scented, it also contains alpha hydroxy acids, which steps up the skin's exfoliating and renewing processes.
Look for products rich in alpha hydroxy acids, which slough away dead skin cells, leaving the skin renewed and glowing.
There are products containing alpha hydroxy acid that you can use at home, but the acid content will be low.
Some people use alpha hydroxy acids on a regular basis to fade freckles, in combination with avoiding excessive sun exposure and the use of sunblock.
The dangers of using hydroxy acids are that they increase your chances of sun damage.
Wear sunscreen when using hydroxy acids.
Hydroxy acids show promise in eliminating age spots and shrinking pores.
Salicylic acid is part of the beta hydroxy acid family and is a common acne-fighting ingredient used in many facial care products.
Alpha hydroxy acid is an effective exfoliator that helps unclog pores and clear away dead skin cells.
Specific acids in the alpha hydroxy family include glycolic and lactic acid, both of which are known to be gentle and non-irritating to skin when used in concentrations of 10 percent or less.