Color additives classification

Hair Coloring Regulation Issues. In the United States the classification of color additives is complex. Under the Federal Food, Dmg and Cosmetic Act, all cosmetic colors must be the subject of an approved color additive petition to the Food and Dmg Administration there is an exception for coal-tar colorants used to color hair. Based on the composition of these colorants, FDA can require a certification on each manufactured batch of colorant to assure conformance with the approved specifications. In the early 1990s FDA has required certification only for synthetically derived coal-tar type colors. Many of the approved color additives, both certified and noncertified, are restricted ia their potential use. These restrictions can be found ia the color additive regulations ia the Code of Federal Regulations at 21 CFR 73 and 74. 

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. 

In the United States the classification of color additives is complex. Under the Federal Food, Drug and Cosmetic Act, all cosmetic colors must be the subject of an approved... 

The color index (Cl) number, developed by the society of dyers and colorists, is used for dye classification. Once the chemical structure of a dye is known, a fivedigit Cl number is assigned to it. The first word is the dye classification and the second word is the hue or shade of the dye. For example, Cl Acid Yellow 36 (Cl 13065) is a yellow dye of the acid type. Additionally, a dye mixture may consist of several dyes for example, Navy 106 is composed of three reactive azo dyes remazol black B (Reactive Black 5), Remazol Red RB (Reactive Red 198), and Remazol Golden Yellow 3. 

The trained map can be graphically presented by 2D planes for each variable, with the variable distribution values being indicated by different colors on the different regions of the map. Additionally, the node coordinates (vectors) can be clustered by the nonhierarchical A -means classification algorithm. 

We will begin our discussion with the base polymer itself. While it is not an additive, it is obviously a main component of our total system and must be discussed in coloristic terms. From a color standpoint, there are three classifications of resins transparent, translucent, and opaque resins. 

In addition to text and symbols, colors may be used to denote hazard or classification information. Under the EU system, an orange background is required for symbols. The transport system uses a variety of colors, such as a red background for the flammability symbol. The use of colors is intended to make the symbols stand out, or to more clearly delineate the hazard. 

In all of these attempts at a definition or classification of petroleum, it must be remembered that petroleum exhibits wide variations in composition and properties, and these variations not only occur in petroleum from different fields but may also be manifested in petroleum taken from different production depths in the same well. The mixture of hydrocarbons is highly complex. Paraffinic, naphthenic, and aromatic structures can occur in the same molecule, and the complexity increases with boiling range of the petroleum fraction. In addition, petroleum varies in physical appearance from a light-colored liquid to the more viscous heavy oil. The near-solid or solid bitumen that occurs in tar sand deposits is different from petroleum and heavy oil, as evidenced by the respective methods of recovery (Speight, 1999,2000). 

Dyes may be classified according to their constitution, such as azo dyes, phthaleins, alizarines, etc., but from the standpoint of the dyer the more important classification is that which is based on the behavior of the dyes with fibers. Dyes are grouped in this way as substantive or direct, and adjective or mordant. Dyes are also classed as acidic and basic. In addition to the dyes belonging to these classes, there are a few, such as indigo and other Vat dyes, aniline black, and the so-called ingrain colors, which are produced by chemical reactions within the fiber. 

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... 

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