miércoles, 14 de enero de 2009

WONDERS OF CHEMISTRY

GO TO THE LINK BELOW TO FIND THE SURPRISING CHEMICAL FORMULAS THAT ARE BEHIND OUR EVERYDAY LIFE PRODUCTS AND ITEMS
http://pubs.acs.org/cen/whatstuff/stuff.html

IT IS A MARVELOUS AND EXCITING SCIENCE !!!

lunes, 12 de enero de 2009

SAFE FUNGICIDE FOR PAINTED WALLS

Taken from two publications from the “Paint and Coating Industry” Magazine (www.pcimag.com) from 07/08 edition, pages 54 and 60, we can see that the active ingredient Carbamate, like IPBC (3-Iodo-2-propynyl butylcarbamate),is being considered safe and green, for the control of fungi and bacteria on painted wall surfaces. Also there is a paragraph that lines some of the drawbacks of the Silver Ion technology.

viernes, 9 de enero de 2009

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GREEN CHEMICALS

The Green Seal certification is granted by the organization with that name and has a great number of members contributing with the requirements to pass a raw material or a chemical product as "green". Generally for a material to be green, has to comply with a series of characteristics like: near neutral pH, low volatility, non combustible, non toxic to aquatic life, be biodegradable as measured by oxygen demand in accordance with the OECD definition.
Also the materials have to meet with toxicity and health requirements regarding inhalation, dermal and eye contact. There is also a specific list of materials that are prohibited or restricted from formulations, like ozone-depleting compounds and alkylphenol ethoxylates amongst others. Please go to http://www.greenseal.com/ for complete information on their requirements.
For information on current issues regarding green chemicals, see the blog from the Journalist Doris De Guzman, in the ICIS at: http://www.icis.com/blogs/green-chemicals/.
Certification is an important — and confusing — aspect of green cleaning. Third-party certification is available for products that meet standards set by Green Seal, EcoLogo, Energy Star, the Carpet & Rug Institute and others.
Manufacturers can also hire independent labs to determine whether a product is environmentally preferable and then place the manufacturer’s own eco-logo on the product; this is called self-certification. Finally, some manufacturers label a product with words like “sustainable,” “green,” or “earth friendly” without any third-party verification.
“The fact that there is not a single authoritative standard to go by adds to the confusion,” says Steven L. Mack M.Ed., director of buildings and grounds service for Ohio University, Athens, Ohio.
In www.happi.com of June 2008 edition, there is a report of Natural formulating markets that also emphasises the fact that registration of "green formulas" is very confused at present, due to lack of direction and unification of criteria and that some governmental instittion (in my opinion the EPA) should take part in this very important issue.