Subject: Reusing Water Bottles - Is A NO NO
>Date: Thu, 30 Oct 2003 15:30:59 -0800 (PST)
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A WARNING TO ALL!!
Subject:Reusing Water Bottles - Is A NO NO
Many are unaware of poisoning caused by re-using plastic bottles.
Some of you may be in the habit of using and re-using your disposable
mineral water bottles (eg. Evian, Aqua, Ice Mountain, Vita, etc), keeping
them in your car or at work. Not a good idea. In a nutshell, the plastic
(called polyethylene terephthalate or PET) used in these bottles
contains a potentially carcinogenic element (something called
diethylhydroxylamine or DEHA). The bottles are safe for one-time use only; if you must
keep them longer, it should be or no more than a few days, a week max,
and keep them away from heat as well. Repeated washing and rinsing can
cause the plastic to break down and the carcinogens (cancer- causing
chemical agents) can leach into the water that YOU are drinking. Better
to invest in water bottles that are really meant for multiple uses. This
is not something we should be scrimping on. Those of you with family -
to please advise them, especially children."
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Is it come from a realiable source? Any documentary proof?
睇MSDS (Material Safety Data Sheet):
POLYETHYLENE TEREPHTHALATE
POTENTIAL HEALTH EFFECTS:
Decomposition (分解) products caused by overheating Polyethylene Terephthalate may cause skin,eye or respiratory tract irritation.
CARCINOGENICITY (致癌性) INFORMATION:
None of the components present in this material at concentrations equal to or greater than 0.1%are listed by IARC, NTP, OSHA or ACGIH as a carcinogen (致癌物).
DECOMPOSITION:
Combustion products include carbon dioxide and carbon monoxide. Thermal decomposition products can include acetaldehyde and ethylene.
reference:
http://www.google.com.hk/search?q=cache:my08sE0kbAwJ:www.dakamericas.com/msds/dk0003.pdf+%22Polyethylene+terephthalate%22+hazard&hl=zh-TW&lr=lang_zh-CN|lang_zh-TW|lang_en&ie=UTF-8
Chemical Stability
Stable at normal temperatures and storage conditions.
Decomposition
Decomposition temperature: >300 C (>572 F)
Decomposition products include carbon oxides, aldehydes,terephthalic acid.
reference:
http://www.google.com.hk/search?q=cache:IY2FIZFqHSgJ:msds.dupont.com/msds/pdfs/EN/PEN_09004a2f800079ad.pdf+%22Polyethylene+terephthalate%22+hazard&hl=zh-TW&lr=lang_zh-CN|lang_zh-TW|lang_en&ie=UTF-8
My conclusion:
It is obvious that the warning is nonsense.
講開又講, 近排互聯網好多o的似是而非的警告.
記得有一個叫人唔好飲可樂的message,理據係因為可樂的
酸性:可以幾天就溶了一口鐵釘.可是寫message的人沒有
想到自己胃裡的胃酸(濃鹽酸)只用數十分鐘便可以了.
真係好
大家回應下呢d message
等我唔駛曬時間去研究佢地既真偽~