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DID YOU KNOW.... FIBER REACTIVE DYES actually have a chemical reaction in the presence of a Ph altering "fixative" like Soda Ash, causing them to form a chemical bond and become a physical part of the fiber molecule. Once the excess "leftover" dye is washed out thoroughly, the rest will not come off except in the presence of bleach or other "discharge" chemicals. This is in contrast to "all purpose" or "direct" types of dye which work by "staining" the fibers with the assistance of heat in the form of hot dye baths or steaming. Vat dyes are another type, which have to be made soluble in water with "reducing agents" like lye, and insoluble on fabric with "oxidizing agents" or air exposure. Natural Indigo is one of these and it can fade and rub off.
Clothing properly dyed with Fiber Reactive dye, and washed according to direction to remove the excess, is safe for babies because it will not come off in their mouth or on their skin. With other types of dye, a bit will wash out every time the garment is washed, which means it fades much faster, and could come off in the presence of rain, sweat or baby saliva! Fabrics properly dyed with Fiber Reactive dye won’t bleed on the rest of your laundry either, as long as the rinse and washout procedure was followed. You can wash your dyed clothing with your white stuff!
Learn more about fiber reactive dyes at:
www.dharmatrading.com
Learn more about fiber reactive dyes at:
www.dharmatrading.com
Sunday October 5, 2008
High Level of flame-retardant chemical found in Californians
The Associated Press
Los Angeles- Researches have found that Californians have twice as much of flame-retardant chemicals in their blood and as much as 10 times more of them in their homes than anywhere in the country.
Older children and infants, who may be more susceptible to the harmful effects of the chemicals, can have several times as much as adults, it was reported Wednesday in the journal Environmental Science and Technology.
The chemicals, known as polybrominated diphenyl ethers, or PBDEs, have been widely used in California after a law was passed 30 years ago requiring furniture and bedding to withstand 12 seconds of contact with an open flame without igniting. Foam and similar materials contain as much as 12% PBDE’s by weight.
The chemical is released from furniture in dust produced by abrasion and normal wear. Children can get larger doses because they come in contact with the fine dust on the floors.
PBDEs have been shown in animals to cause thyroid hormone disruption and to interfere with developing reproductive and nervous systems.
The research team collected samples from 49 homes in the San Francisco Bay area cities of Richmond and Bolinas and 120 homes on Cape Cod and compared levels in those homes with published levels from Canada, Europe and several U.S. cities.
Levels in California homes were 10 times higher than those on Cape Cod, 5 times higher than those in Texas, six times higher than those in Washington D.C., four times higher than those in Boston and 200 times higher than those in Europe, where the chemicals are used sparingly.
High Level of flame-retardant chemical found in Californians
The Associated Press
Los Angeles- Researches have found that Californians have twice as much of flame-retardant chemicals in their blood and as much as 10 times more of them in their homes than anywhere in the country.
Older children and infants, who may be more susceptible to the harmful effects of the chemicals, can have several times as much as adults, it was reported Wednesday in the journal Environmental Science and Technology.
The chemicals, known as polybrominated diphenyl ethers, or PBDEs, have been widely used in California after a law was passed 30 years ago requiring furniture and bedding to withstand 12 seconds of contact with an open flame without igniting. Foam and similar materials contain as much as 12% PBDE’s by weight.
The chemical is released from furniture in dust produced by abrasion and normal wear. Children can get larger doses because they come in contact with the fine dust on the floors.
PBDEs have been shown in animals to cause thyroid hormone disruption and to interfere with developing reproductive and nervous systems.
The research team collected samples from 49 homes in the San Francisco Bay area cities of Richmond and Bolinas and 120 homes on Cape Cod and compared levels in those homes with published levels from Canada, Europe and several U.S. cities.
Levels in California homes were 10 times higher than those on Cape Cod, 5 times higher than those in Texas, six times higher than those in Washington D.C., four times higher than those in Boston and 200 times higher than those in Europe, where the chemicals are used sparingly.
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