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The substitution of dangerous chemicals in the workplace is the process of replacing or eliminating the use chemicals that have significant chemical hazards.The goal of the substitution process is to improve occupational health and safety and minimize harmful environmental impacts. [1]
Hazard substitution is a hazard control strategy in which a material or process is replaced with another that is less hazardous. Substitution is the second most effective of the five members of the hierarchy of hazard controls in protecting workers, after elimination .
A substitution reaction (also known as single displacement reaction or single substitution reaction) is a chemical reaction during which one functional group in a chemical compound is replaced by another functional group. [1] Substitution reactions are of prime importance in organic chemistry.
In the third type of substitution reaction, radical substitution, the attacking particle is a radical. [44] This process usually takes the form of a chain reaction, for example in the reaction of alkanes with halogens. In the first step, light or heat disintegrates the halogen-containing molecules producing radicals.
The Substitution support portal (SUBSPORT) is an EU-based collaboratively-developed resource for chemical substitution. [21] It includes alternatives assessment case studies. In Sweden, the Swedish Centre for Chemical Substitution works to promote the use of Alternatives Assessment by providing education and support to companies.
Saponification is a process of cleaving esters into carboxylate salts and alcohols by the action of aqueous alkali. Typically aqueous sodium hydroxide solutions are used. [1] [2] It is an important type of alkaline hydrolysis. When the carboxylate is long chain, its salt is called a soap.
Source reduction is activities designed to reduce the volume, mass, or toxicity of products throughout the life cycle. It includes the design and manufacture, use, and disposal of products with minimum toxic content, minimum volume of material, and/or a longer useful life.
The SIN List is composed of chemicals evaluated by the environmental NGO ChemSec as meeting EU criteria for being Substances of Very High Concern (SVHCs) under Article 57 of REACH, being either carcinogenic, mutagenic or reprotoxic (CMR), persistent, bioaccumulative and toxic (PBT), very persistent and very bioaccumulative (vPvB), or posing an equivalent environmental or health threat., [1] [2]