Search results
Results from the WOW.Com Content Network
n-Butyl acetate is an organic compound with the formula CH 3 CO 2 (CH 2) 3 CH 3.A colorless, flammable liquid, it is the ester derived from n-butanol and acetic acid.It is found in many types of fruit, where it imparts characteristic flavors and has a sweet smell of banana or apple.
The OSHA definition is arguably broad enough to include oxygen-deficient circumstances in the absence of "airborne contaminants", as well as many other chemical, thermal, or pneumatic hazards to life or health (e.g., pure helium, super-cooled or super-heated air, hyperbaric or hypo-baric or submerged chambers, etc.).
The current PEL for OSHA standards are based on a 5 decibel exchange rate. OSHA's PEL for noise exposure is 90 decibels (dBA) for an 8-hour TWA. Levels of 90-140 dBA are included in the noise dose. [4] PEL can also be expressed as 100 percent “dose” for noise exposure. When the noise exposure increases by 5 dB, the exposure time is cut in ...
2-Ethoxyethyl acetate: 2 8 56 °C Ethyl acetate: 2 12 IA −4 °C 460 °C Ethylamine: 3.5 14 IA −17 °C Ethylbenzene: 1.0 7.1 15–20 °C Ethylene: 2.7 36 IA 0.07 490 °C Ethylene glycol: 3 22 111 °C Ethylene oxide: 3 100 IA −20 °C Ethyl chloride: 3.8 [7] 15.4 IA −50 °C Ethyl mercaptan: IA Fuel oil No.1: 0.7 [7] 5 Furan: 2 14 IA −36 °C
An occupational exposure limit is an upper limit on the acceptable concentration of a hazardous substance in workplace air for a particular material or class of materials. It is typically set by competent national authorities and enforced by legislation to protect occupational safety and health.
A common method for preparing isobutyl acetate is Fischer esterification, where precursors isobutyl alcohol and acetic acid are heated in the presence of a strong acid. Isobutyl acetate has three isomers: n-butyl acetate, tert-butyl acetate, and sec-butyl acetate, which are also common solvents.
The Occupational Safety and Health Administration (U.S. OSHA) has set OSHA-STELs for 1,3-butadiene, [1] benzene [2] and ethylene oxide. [3] For chemicals, STEL assessments are usually done for 15 minutes and expressed in parts per million (ppm), or sometimes in milligrams per cubic meter (mg/m 3 ).
In the US, dimethyl carbonate was exempted under the definition of volatile organic compounds (VOCs) by the U.S. EPA in 2009. [9] Due to its classification as VOC exempt, dimethyl carbonate has grown in popularity and applications as a replacement for methyl ethyl ketone (MEK) and other solvents.