There are safety hazards in disposable plastic containers
There are safety hazards in disposable plastic containers
Summer comes, people go out to eat more, eat meal, often need to use disposable lunch box packing, is called a take-away or too late to eat food on the spot are often take disposable lunch box. When enjoying the convenience of a disposable lunch box, have you ever considered that there are hidden dangers?
Recently, the reporter bought from the market, 5 kinds of commonly used disposable plastic lunch box experiment, found the PS plastic lunch box and the foam after lunch box in ethyl acetate, intense reaction occurs, immediately dissolves. The bottom of PP plastic lunch box is softer.
This experiment shows that PP plastic lunch box is relatively safe, and PS plastic lunch box is relatively safe.
Experts point out that when cooking dishes, the products of wine and vinegar are ethyl acetate, which can be moved to food if used in a disposable plastic lunch box.
The experiment to prepare
On the morning of June 6, a reporter from the zhifu dividend market a eat hutch appliance shop bought five kinds of commonly used disposable plastic lunch box, three of them are PP plastic lunch box, is a kind of PS plastic lunch box, the other one is at the bottom of the annotation "WS - 01" foam lunch boxes.
Later, the reporter went to a chemical reagent shop in zhifu district chaoyang street to purchase a bottle of 500ml acetate, and the manufacturer was "tianjin bodi chemical co., LTD."
Before the experiment, the reporter opened five lunch boxes and placed them on the table, and then poured 2ml ethyl acetate into each meal box.
The PS plastic lunch box melts when it meets the ethyl acetate
After the acetic acid ethyl acetate, PS plastic transparent lunch box immediately reacts violently, the reporter can clearly hear "chirp" sound, smell the sour taste of pungent nose. About a minute later, there was a liquid coming out of the bottom of the box, and the reporter picked up the lunch box and there was an amazing sight: all the bottom of the lunch box melted into a jelly.
The plastic foam lunch box is similar to that of the rice box, and the ethyl acetate is poured into a white foam, and the sound is "sniffed" and the bottom of the lunch box is "burned" at the bottom of the box.
Five minutes later, the two containers were "burnt" to form liquid mucus that began to coagulate on the table, and other parts of the lunch box that were exposed to ethyl acetate showed significant physical distortion.
After 10 minutes, the mucus is condensed into a white latex, wiped with a tissue and can be erased from the table.
In 30 minutes, the other parts of the lunch box that have been exposed to ethyl acetate have been condensed into dry and brittle material.
There is no physical distortion in PP plastic containers
After the ethyl acetate, three PP plastic containers did not respond.
Five minutes later, the bottom of the lunch box began to soften.
After 30 minutes, the ethyl acetate in the lunch box had evaporated, and the bottom of the chunky lunch box had become soft, without physical distortion. Among them, the "enthsi" brand of transparent rice box has the lowest level of soft, the reporter noticed, the price of this lunch box is 1 yuan, the price is highest, the other two PP plastic lunch box price is about 0.3 yuan.
Mix wine and vinegar to produce ethyl acetate
The once thick and tough disposable lunch box is often softened after it has been served. The reporter inquires the information, consult the expert to know, the meal box may meet the dissolved organic matter. In general, disposable lunch box is divided into two kinds of material, a kind of "PP", refers to the polypropylene plastics, one kind is the "PS", refers to the polystyrene plastics, and foamed plastics is polystyrene, polyurethane, PVC, PE and other ingredients. According to experts, the organic matter produced in the cooking, besides the oil, is the ethyl acetate, which meets the ethyl acetate, which is easy to dissolve and migrate. "In cooking, the commonly used wine and vinegar products are ethyl acetate." The experts said the main components of the rice wine is ethanol, the main component of vinegar is acetic acid, ethanol and acetic acid reaction after producing ethyl acetate, ethyl acetate is organic matter, can disrupt the benzene ring of PS, PP and other polymer materials, to dissolve and digestion.
