Additional pigments, classification

Color Additives. The FDA has created a unique classification and strict limitations on color additives (see also CoLORANTS FOR FOOD, DRUGS, COSMETICS, AND MEDICAL DEVICES). Certified color additives are synthetic organic dyes that ate described in an approved color additive petition. Each manufactured lot of a certified dye must be analyzed and certified by the EDA prior to usage. Color lakes are pigments (qv) that consist of an insoluble metallic salt of a certified color additive deposited on an inert substrate. Lakes are subject to the color additive regulations of the EDA and must be certified by EDA prior to use. Noncertifted color additives requite an approved color additive petition, but individual batches need not be EDA certified prior to use. 

We have discussed the composition of paint, the attributes of various types of paint, and the place of paint in a classification of matter. Now you will produce paint by preparing paint pigments and combining these pigments with binders. In addition to preparing paints, you will examine the physical properties of the substances produced in your activities. 

Normal-phase sorbents such as silica and Florisil are used to isolate low to moderate polarity species from nonaqueous solutions. Examples of applications include lipid classification, plant pigment separations, and separations of fat-soluble vitamins from lipid extracts, as well as the clean-up of organic solvent concentrates obtained from a previous SPE method or liquid-liquid extraction. Alumina is used to remove polar species from nonaqueous solutions. Examples include vitamins in feeds and food and antibiotics and other additives from feed. Normal-phase chromatography has been used for a number of years, and most applications for normal-phase column chromatography may be easily transferred over to normal-phase SPE. 

CAS 147-14-8 12239-87-1 EINECS/ELINCS 205-685-1 Synonyms Cl 74160 2 Classification Copper phthalocyanine color Definition Solvent stable form of Pigment blue 15 prepared by the introduction of a sm. amt. of chlorine into the molecule Empirical C32H16CUN8 Toxicology TSCA listed Uses Colorant for coatings, inks, plastics Manuf/Distrib. Albion Colours Ltd Avecia Pigments/Addit. Paramount Rainbow Sinochem Jiangsu Wuxi... 

The spectrophotometric technique is very useful for comparative purposes for a color classification system in a database and for the identification of individual organic or pearlescent (or interference) pigments or additives such as ultraviolet (UV)-absorbers batch-to-batch discrimination is also possible for analyzing the basecoats. MSP permits to measure absorption spectra in a given spectral range comprising typically 250-780 nm and to calculate... 

Lipoids as a type are non-saponifiable, although some of the sterols may occur as esters with aliphatic acids. A systematic classification of the lipoids is unsatisfactory, since the only common property of these compounds is the physical one of solubility in certain organic solvents. Examples of biological lipoids occur in the essential or volatile oils of plants and the fat-soluble pigments (lipochromes) of plants and animals. In addition, some of the vitamins and the hormones belong to the lipoid type, in that they are fat-soluble. 

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