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n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [2]
Hydrogen peroxide, aqueous solutions with more than 20 percent but not more than 60 percent hydrogen peroxide (stabilized as necessary) UN 2015: 5.1: Hydrogen peroxide, stabilized or Hydrogen peroxide aqueous solutions, stabilized with more than 60 percent hydrogen peroxide UN 2016: 6.1
Products for bleaching one's hair at home usually contain a 6% solution of hydrogen peroxide, while products for use in a hair salon can contain up to 9%. [15] Hair bleaching products can damage hair and cause severe burns to the scalp when applied incorrectly or left on too long. [17]
Hydrogen peroxide is a chemical compound with the formula H 2 O 2.In its pure form, it is a very pale blue [5] liquid that is slightly more viscous than water.It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use.
In the wash, both compounds dissolve in the water. When dissolved in water, the persalt releases hydrogen peroxide (e.g. from sodium percarbonate): 2Na 2 CO 3 ∙3H 2 O 2 → 2Na 2 CO 3 + 3H 2 O 2. In a basic wash solution, hydrogen peroxide loses a proton and is converted to the perhydroxyl anion: H 2 O 2 ⇌ H + + HO 2 −
The disulfide bonds give hair its elasticity, and can be reformed with chemicals. Next, an oxidation lotion—hydrogen peroxide—was applied to close the disulfide bridges again, and the hair was reformed to the shape of the rod. The entire process took 6–8 hours at room temperature. In the 1970s, acid perms were invented.
The thioglycolic acid in the perm solution reduces the disulfide cystine bonds in the cortex of the hair. [2] In a sense, the thioglycolate removes crosslinks. After washing, the hair is treated with a mild solution of hydrogen peroxide, which oxidizes the cysteines back to cystine. These new chemical bonds impart the structural rigidity ...
benzoyl peroxide: flour treatment agent 938 E U argon: propellant 939 E U helium: propellant 941 A E U nitrogen: propellant 942 A E U nitrous oxide: propellant 943a E U butane: propellant 943b E U isobutane: propellant 950 A E U Acesulfame potassium: artificial sweetener 951 A E U aspartame: artificial sweetener 952 A E cyclamic acid ...