Other regulated substance, aromatic extract or flavouring

3 Flavouring liquids Other regulated substance, aromatic extract or flavouring Terpene hydrocarbons, n.o.s., 3.3 Terpenes, n.o.s. 

Many extracts are based chemically on the benzene ring, a class of often fragrant compounds which have come to be called aromatics as a consequence. They include benzaldehyde, which smells like almonds, and vanillin, the basis of vanilla. Camphor oil (8008-51-3) is the essential oil removed from the camphor tree. It contains camphor, as well as many other compounds. Camphor may also be extracted from other natural sources, but usually in smaller quantities. Vegetable extracts usually contain terpenes (CjoHig), a class of flammable hydrocarbons based on the isoprene unit (C5H8). 

Carbonated beverages are often sold as concentrated syrups syn. beverage extracts that are subsequently mixed with water, sweeteners, and other components at bottling facilities. In addition to the flavour, colours, preservatives, and other constituents, these syrups contain acidulants acids that give a tart flavour, maintain pH levels, disinfect, and perform other functions. Acidulants include phosphoric, citric, ascorbic, tartaric, adipic, and malic acids. 

Individual extracts may be flammable, toxic, or otherwise hazardous (e.g., benzaldehyde is a combustible liquid with an irritating odour in high concentrations, vanillin is a flammable solid, and beverage acidulants are corrosive) but it is the extensive use of solvents, like alcohols and ethers, to carry the extracts that presents the usual hazard in transportation. However, even if the extracts, carriers, or additives are not directly hazardous, they may be so irritating and obnoxious that they present a hazard in transportation to passen- 

Liquid, see Terminology, Liquid, p.241 Oil, see Terminology, Oil, p.244 Other regulated substance, see Miscellaneous Dangerous Goods (including Class 9), p.158 

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See also in sourсe #XX -- [ ]

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