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Tosyl group (blue) with a generic "R" group attached Tosylate group with a generic "R" group attached. Note the extra oxygen, compared to plain tosyl. In organic chemistry, a toluenesulfonyl group (tosyl group, abbreviated Ts or Tos [nb 1]) is a univalent functional group with the chemical formula −SO 2 −C 6 H 4 −CH 3.
Tosylamide/formaldehyde resin (TSFR) is a polymeric resin used as a plasticizer and secondary film-forming agent in nail polishes. While it was still in use as of 2023, [update] its use has been diminishing in favor of hypoallergenic alternatives, due to the prevalence of reactions causing allergic contact dermatitis of the eyelids , face, and ...
Phenol-formaldehyde resins, as a group, are formed by a step-growth polymerization reaction that can be either acid- or base-catalysed.Since formaldehyde exists predominantly in solution as a dynamic equilibrium of methylene glycol oligomers, the concentration of the reactive form of formaldehyde depends on temperature and pH.
What is red dye No. 3? Red No. 3, approved for use in foods in 1907, is made from petroleum. The FDA's effort to ban the dye has been in the works for decades. The agency first became aware that ...
The U.S. Food and Drug Administration (FDA) announced a ban this week on red dye No. 3, or erythrosine, from foods and oral medications due to a potential cancer risk.. Food manufacturers have ...
The Food and Drug Administration (FDA) has revoked the use of Red Dye No. 3 (also known as erythrosine, Red Dye 3, FD&C Red No. 3 and Red No. 3) in food and ingested drugs as of January 15 ...
4-Toluenesulfonyl chloride (p-toluenesulfonyl chloride, toluene-p-sulfonyl chloride) is an organic compound with the formula CH 3 C 6 H 4 SO 2 Cl. This white, malodorous solid is a reagent widely used in organic synthesis. [2] Abbreviated TsCl or TosCl, it is a derivative of toluene and contains a sulfonyl chloride (−SO 2 Cl) functional group.
The third in the series of color developing agents used in developing color films, commonly known as CD-3, is chemically known as N-[2-[(4-Amino-3-methylphenyl)ethylamino]ethyl]methanesulfonamide Sesquisulfate Monohydrate. [1]