The three xylene isomers: o-xylene, m-xylene, and p-xylene. In organic chemistry, xylene or xylol (from Greek ξύλον (xylon) ' wood '; [1] [2] IUPAC name: dimethylbenzene) are any of three …

The term total xylenes refers to all three isomers of xylene (m-, o-, and p-xylene). Mixed xylene is a mixture of the three isomers and usually also contains 6–15% ethylbenzene. Xylene is also …

2024年9月26日 · How should the LLOQ for total Xylenes be reported, i.e., a sum of the LLOQ for the 3 isomers? Unless a separate integration for total xylenes is performed, the xylene isomer …

In this report, the terms xylene, xylenes, and total xylenes will be used interchangeably. There are three forms of xylene in which the methyl groups vary on the benzene ring: meta-xylene, ortho …

Mixed xylene is a mixture of the three forms of xylene and smaller amounts of other chemicals, primarily ethylbenzene. Mixed xylene usually contains 6%- 15% ethylbenzene, although it may …

EPA has classified mixed xylenes as a Group D, not classifiable as to human carcinogenicity. (6) Physical Properties m-, o-, and p-Xylene are the three isomers of xylene; commercial or mixed …

Its purpose is to present levels of significant exposure for total xylenes based on toxicological studies, epidemiological investigations, and environmental exposure data.

Xylene is a colorless, sweet-smelling liquid that catches on fire easily. It occurs naturally in petroleum and coal tar. Chemical industries produce xylene from petroleum.

Xylenes are a natural products of many plants, and are a component of petroleum and coal tar. From 1987 to 1993, according to EPA's Toxic Chemi- cal Release Inventory, xylene releases …

Production of xylenes has increased: from about 5 billion lbs. in 1982 to 6.84 billion lbs in 1993. In 1982 it was estimated that industries consumed xylenes as follows: production of ortho-xylene, …