Kahulugan at paggamit

4.1 Dilute solutions of peroxides in various organic solvents are often used as catalysts or reaction initiators. Peroxides can also be formed through autoxylation in certain classes of compounds, including ethers, acetals, dienes, and alkyl aromatics, and are a potential safety concern. This test method provides a procedure for determining peroxide or reactive oxygen species levels.

ASTM E299-2017 Standard Test Method para sa Trace Peroxides sa Organic Solvents

Hakbang 1: Saklaw

1.1 This test method 2,3 covers organic solvents containing reactive oxygen species in this range of 5 sa 80 micrograms per gram (PPM) or higher. By using a special reaction absorption cell, the test method can be extended to a range of 0 to 5ppm. This test method can be used to determine a variety of peroxide classes with different reactivity, such as hydroperoxides, diacyl peroxides, diaryl peroxides, peresters, and ketone peroxides. Stable ditertiary alkyl peroxides do not react under analytical conditions.

1.2 Solvents that can be successfully analyzed include saturated and aromatic hydrocarbons, alcohols, ethers, ketones and esters. Bukod pa rito, the test method is suitable for olefin solvents and certain compounds containing alpha, beta and conjugate unsaturation. Solid samples soluble in acetic acid-chloroform solvents can also be analyzed.

1.3 Review the current Safety Data Sheet (SDS) for details on toxicity, first aid measures and safety precautions.

1.4 Ang mga pagpapahalagang ipinahayag sa mga yunit ng SI ay dapat ituring bilang mga pamantayang pagpapahalaga. Ang mga halaga na ibinigay sa mga panaklong ay para sa sanggunian lamang.

1.5 This standard is not intended to address safety concerns, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng mga gumagamit ng pamantayang ito na magtatag ng angkop na mga kasanayan sa kaligtasan at kalusugan at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.

1.6 Ang internasyonal na pamantayang ito ay batay sa mga internasyonal na kinikilalang pamantayan na mga prinsipyo na itinatag sa “Desisyon sa Mga Prinsipyo para sa Pag unlad ng Internasyonal na Pamantayan, Mga Patnubay at Rekomendasyon” issued by the WTO Committee on Technical Barriers to Trade (TBT).