How to identify phenol poisoned fish

Safety data sheet issued by the Department of Laboratory, Ho Chi Minh City Institute of Public Health Hygiene (phen ₆ H ₅ OH) is defined as a colorless solid to light pink, distinct smell, aromatic, acrid, causing burns. . This substance is easily soluble in methanol, diethyl eter, cold acetone, water, benzene, chloroform, glycerol, petroleum, carbon disulfide, volatile oil and fixed, alkaline aqueous hydroxide, carbon tetrachloride, acetic acid, substance liquid sulfur dioxide, especially alcohol. Phenol is almost insoluble in eter oil.

Pompano.

As recommended, phenol chemicals are very toxic to the skin, respiratory, digestive, eyes. Particularly dangerous if swallowed or inhaled, in contact with skin. This substance mutates somatic cells in mammals. The 50% lethal dose for animals on skin contact is 630mg / kg. Human poisoning of phenol can be affected chronicly leading to cancer, harming organs such as kidney, central nervous system, liver.

Dr. Phan The Dong, a lecturer in the Faculty of Science and Technology, Hoa Sen University, Ho Chi Minh City, said phenol is a chemical used in industry, has a lot of toxic effects to human health so it is not allowed to use in food. He stressed: "There are absolutely no standards that regulate the level or content of phenol in food, ie it is not allowed to be present in food".

Dr. Dong instructed how to quickly test the phenol in fish as follows: Grind the sample of fish to be tested, mix it into water or water with alcohol, then add a few drops of iron chlroride. If blue, green or purple appears, it can be concluded that the fish has phenol. This is only a quick test, if you want to confirm the exact phenol infection, you need to take the sample for chromatographic analysis.