Please advise the long-term toxicity and carcinogenicity of phenylthiourea.

Phenylthiourea, abbreviated as PTC in English, is a toxic substance with white crystals and pungent smell. It is a white crystalline drug and a phenyl derivative of thiourea. The taste test of phenylthiourea was conducted by Arthur, a chemist from DuPont. Fox found it by accident. 193 1 year, Fox synthesized phenylthiourea in his laboratory in Wilmington, Delaware, USA, and a small amount of phenylthiourea powder was blown into the air by an accidental gust of wind. Noel, his assistant next to him, complained to him about the bitter taste of this compound, but Fox himself didn't feel it at all. So he gave the samples of phenylthiourea to colleagues, family and friends to taste, and found that some people felt bitter, some people could only taste some bitterness, and some people could not taste anything.

It is found that human beings can be divided into two categories: phenylthiourea tasters and taste-blind people. Phenthiourea tasters can still feel bitter substances, such as quinine sulfate and picric acid, without thioamide groups. Further research shows that the taste of phenylthiourea conforms to Mendel's genetic law, taste is determined by dominant gene T, and taste blindness is determined by recessive gene homozygote tt.

Attribute and stability editing

1. Avoid contact with oxides, acids and bases.

2. Intake, inhalation, contact and eye and skin absorption will all cause harm. Wear appropriate protective clothing to avoid skin and eye contact. Burning this product will produce irritating, corrosive and/or toxic gases.

Storage method editing

1. Stored in a cool and ventilated warehouse. Stay away from fire and heat sources. Keep the container sealed. Should be stored separately from oxidants, acidic substances and alkali metals, and should not be mixed. Equipped with corresponding varieties and quantities of fire fighting equipment. The storage area should be equipped with suitable materials to control leakage.

2. Store in a cool and ventilated place and in a closed container. Transportation must be labeled as "drugs", which is limited to air transportation and railway transportation.