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Antifreeze products for automotive use containing propylene glycol in place of ethylene glycol are available, and are generally considered safer to use, as it possesses an unpleasant taste in contrast to the perceived "sweet" taste of toxic ethylene glycol-based coolants, and produces only lactic acid in an animal's body, as their muscles do ...
This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002). The list can be found as an appendix to 40 CFR 355. [1] Updates as of 2006 can be seen on the Federal Register, 71 FR 47121 (August 16, 2006). [2]
A cryoprotectant is a substance used to protect biological tissue from freezing damage (i.e. that due to ice formation). Arctic and Antarctic insects, fish and amphibians create cryoprotectants (antifreeze compounds and antifreeze proteins) in their bodies to minimize freezing damage during cold winter periods.
An antifreeze is an additive which lowers the freezing point of a water-based liquid. An antifreeze mixture is used to achieve freezing-point depression for cold environments. Common antifreezes also increase the boiling point of the liquid, allowing higher coolant temperature. [ 1 ]
They are generally considered safer to use, as propylene glycol is not as palatable [note 1] and is converted in the body to lactic acid, a normal product of metabolism and exercise. [35] Australia, the UK, and seventeen US states (as of 2012) require the addition of a bitter flavoring (denatonium benzoate) to antifreeze. In December 2012, US ...
The toxic dose is 0.14 mg/kg body weight and the lethal dose between 1.0 and 1.63 g/kg. [9] Some suggest that the LD 50 in adults is about 1 mL/kg, [3] while others suggest that that is the LD 30. [5] Because of its adverse effects, DEG is rarely allowed in foods and drugs. [10]
Vibration: the body is disintegrated into particles within minutes Freeze drying: particles are freeze dried in a drying chamber, leaving approximately 30% of the original weight Metal separation: any metals (e.g., tooth amalgam , artificial hips , etc.) are removed, either by magnetism or by sieving .
A preservative is a substance or a chemical that is added to products such as food products, beverages, pharmaceutical drugs, paints, biological samples, cosmetics, wood, and many other products to prevent decomposition by microbial growth or by undesirable chemical changes.