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NIOSH Pocket Guide to Chemical Hazards (o-Xylene) NIOSH Pocket Guide to Chemical Hazards (m-Xylene) NIOSH Pocket Guide to Chemical Hazards (p-Xylene) Xylene, Hazard Summary (EPA) (Mixed Isomers) The Ear Poisons, The Synergist, American Industrial Hygiene Association, November, 2018
The m-stands for meta-, indicating that the two methyl groups in m-xylene occupy positions 1 and 3 on a benzene ring. It is in the positions of the two methyl groups, their arene substitution pattern, that it differs from the other isomers, o-xylene and p-xylene. All have the same chemical formula C 6 H 4 (CH 3) 2. All xylene isomers are ...
o-Xylene (ortho-xylene) is an aromatic hydrocarbon with the formula C 6 H 4 (CH 3) 2, with two methyl substituents bonded to adjacent carbon atoms of a benzene ring (the ortho configuration). It is a constitutional isomer of m-xylene and p-xylene, the mixture being called xylene or xylenes. o-Xylene is a colourless slightly oily flammable ...
p-Xylene is an important chemical feedstock. Among other industrial applications, it is a raw material in the large scale synthesis of various polymers . In particular it is a component in the production of terephthalic acid for polyesters such as polyethylene terephthalate (generally known as PET).
Xylidine can refer to any of the six isomers of xylene amine, or any mixture of them. The chemical formula of xylidines is C 8 H 11 N or, more descriptively, (CH 3) 2 C 6 H 3 NH 2. The CAS number for the isomer mixture is . They are colorless solids or liquids, although commercial samples can appear yellow or darker.
It can cause chemical burns, tissue damage, delayed pulmonary edema, shock, and skin sensitization. Symptoms of inhalation include a burning sensation in the respiratory tract, cough, sore throat, labored breathing, and dyspnea (shortness of breath). It is also flammable and produces toxic fumes when burned.
All RELs are located in the NIOSH Pocket Guide to Chemical Hazards, along with other key data for 677 chemical or substance groupings. The Pocket Guide is a source of general industrial hygiene information for workers, employers, and occupational health professionals. [1] NIOSH recommendations are also published in a variety of documents ...
Ethylene thiourea (ETU) is an organosulfur compound with the formula C 3 H 6 N 2 S.It is an example of an N,N-disubstituted thiourea.It is a white solid. It is synthesized by treating ethylenediamine with carbon disulfide.