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This is a list of dyes with Colour Index International generic names and numbers and CAS Registry numbers. ... BDH laboratory chemicals & biochemicals catalogue 1983;
Synthetic dyes are produced from various chemicals. The great majority of dyes are obtained in this way because of their superior cost, optical properties (color), and resilience (fastness, mordancy). [2] Both dyes and pigments are colored, because they absorb only some wavelengths of visible light. Dyes are usually soluble in some solvent ...
Colorants (both dyes and pigments) are listed using a dual classification which use the Colour Index Generic Name (the prime identifier) and Colour Index Constitution Numbers. These numbers are prefixed with C.I. or CI, for example, C.I. Acid Orange 7 or C.I. 15510 .
The production and improvement of colorants was a driver of the early synthetic chemical industry, in fact many of today's largest chemical producers started as dye-works in the late 19th or early 20th centuries, including Bayer AG(1863). [2]
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific chemical by the Chemical Abstracts Service (CAS).This list complements alternative listings to be found at list of inorganic compounds and glossary of chemical formulae
Red dye No. 3 will be banned in California after landmark legislation was signed late last week by the state’s governor, Gavin Newsom. The California Food Safety Act—which has been referred to ...
Here are 10 popular foods that often contain chemicals and artificial food dyes so you can know what to look for when you're at the store. Plus, we've included some healthier, chemical-free brands ...
In the European Union, E numbers are used for all additives, both synthetic and natural, that are approved in food applications. E numbers beginning with 1, such as E100 or E161b , are allocated to colorants. [30] The safety of food colors and other food additives in the EU is evaluated by the European Food Safety Authority (EFSA).
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