Acids, Organic oxidation

PVDFs are not sensitive to most strong mineral and organic acids, oxidizing agents, aromatic and aliphatic hydrocarbons, some halogenated solvents, alcohols, bromine, metal salt solutions, or weak bases. 

In polluted areas, oxidant production reaches a maximum in the afternoon, and the highest values are often observed some distance away from the main precursor emissions. During night there is no production of oxidants, and in the polluted urban air the oxidants will be rapidly consumed in various oxidation reactions. The final products are nitric acid, various organic nitrates, aldehydes and organic acids. Oxidants, moved out of one polluted area, may the following day enhance the problems in downwind areas more than 500 km away (12,1J). 

Organic acid oxidation in conjugation with oxidation of CaS03 slurry was studied for seven acids. Degradation of adipic acid and other aliphatic and sulfo carboxylic acids was least at pH 4.3 with 1.0 mM dissolved Mn and greatest at pH 5.5 without Mn. Hydroxypropionic and hydroxyacetic acids inhibited sulfite oxidation and were less subject to degradation. Fumaric acid degraded faster than the other alternatives. 

BIS (HYDROXYMETHYL)-l,3-PROPANEDIOL (115-77-5) CsHuO Combustible solid. Dust cloud forms explosive mixture with air (flash point unlsnown autoignition temp 842°F/450°C). Incompatible with organic acids, oxidizers. Incompatible with thiophosphoryl chloride + heat (forms an explosive material). On small fires, use dry chemical powder (such as Purple-K-Powder), water spray, or COj extinguishers. 

BIS(HYDROXYMETHYL)-l,3-PROPANEDIOL (115-77-5) Combustible solid (flash point unknown). Dust cloud forms explosive mixture with air. Incompatible with organic acids, oxidizers. Incompatible with thiophosphoryl chloride. 

Polycarbonate is resistant to mineral acids even in high concentrations, many organic acids, oxidants, saturated aliphatic and cycloaliphatic hydrocarbons, and alcohols, with the exception of methyl alcohol. 

PC/PE blends exhibit less tendency to stress-cracking as well as higher chemical resistance than polycarbonate. PC/PE blends are resistant to mineral acids, many organic acids, oxidants, many fats, waxes, oils, saturated aliphatic hydrocarbons, alcohols, milk, and fruit juices. They are not resistant to alkaline lyes, hot water (100 °C), amines, concentrated acids and bases, methanol, aromatic and halogen-ated hydrocarbons [86]. 

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