Tuesday 23 April 2013

What is Formalin?


Formalin is a colourless strong-smelling chemical substance usually used in industry of textiles, plastics, papers, paint, construction, and well known to preserve human corpse. It is derived from formaldehyde gas dissolved in water.

Exposure from its gas or vapor can cause irritation to the eyes, nose and respiratory tract, causing sneezing, sore throat, larynx constriction, bronchitis and pneumonia. Multiple exposures can lead to asthma. It can also affect the skin, causing dermatitis or allergic reaction.

Serious inhalation or ingestion can cause severe pain with inflammation ulceration and necrosis of the mucous membranes, which line almost every internal organ. This may show as symptoms of nausea, vomiting blood, diarrhea with bloody stool, blood from the urine, acidosis, vertigo, and circulation failure, then death. 30mL is suggested the lethal dose of formalin. The limit allowed in air that is still safe for human is less than 2 ppm.

Formalin that was recently found in food, might not give such obvious reactions. However, this substance is known to be a carcinogenic substance, can precipitate cancer. A study showed mice exposed to formalin with concentration of 6 to 15 ppm for 2 years developed squamous-cell carcinoma in the nostril. Some other studies also show formalin will cause kidney, liver, and lung problems.



Formalin inside?



 


 

  • Fish. The fish will be stiff, have rubbery meat, hard scales, red gills, clear eyes, doesn’t have the “fishy smell” and no flies flying around.
  • Squid. Very rubbery consistency. Unable to break the meat by hand, which you usually could, only can be cut by a knife.
  • Other sea products, including dried salty fish. Formalin will make the fish become stiff, whitish and odorless. Even when cooked, i.e. fried, it will still be stiff.
  • Tofu. Its consistency is more rubbery than usual, the surface tends to be hard, won’t spoil after 24 hours. Normally after 24 hours, tofu would become slimy, brittle and sour. If it is steamed, submerged in cold water, or kept in the fridge, it may last longer.
  • Wet noodles. Has yellowish color, tends to be elastic, with a drug-like odor or ash-like odor when boiled or mixed with hot water.
How to avoid food with formalin?

  •  As recommended by medical researchers, specialists, let’s detox our food!  How? By purify our food of course! Biozone Food Purifier is the answer!

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