Is the residual odor in the room harmful to human body after the formaldehyde treatment is qualified?

Is the residual odor in the room harmful to human body after the formaldehyde treatment is qualified? Yes

Introduction:

Formaldehyde, chemical formula HCHO or CH? O, the molecular formula is 30.03, also known as ant aldehyde. Colorless gas, with * * odor, has * * influence on people's eyes and nose. The relative density of gas is 1.067 (air = 1), and the density of liquid is 0.8 15g/cm? (-20℃)。 Melting point -92℃, boiling point-65438 09.5℃. Soluble in water and ethanol. The highest concentration of aqueous solution can reach 55%, usually 40%. It is called formaldehyde water, commonly known as formalin, and it is a colorless liquid with an odor of * * * *.

Strong reduction, especially in alkaline solution. Can burn, steam and air form an explosive mixture, and the explosion limit is 7%-73% (volume). The ignition temperature is about 300℃.

Formaldehyde can be produced by dehydrogenation or oxidation of methanol under the catalysis of metals such as silver and copper, and can also be separated from hydrocarbon oxidation products. Used as pesticides and disinfectants, raw materials for preparing phenolic resin, urea-formaldehyde resin, vinylon, urotropine, pentaerythritol and dyes.

Industrial formaldehyde solution generally contains 37% formaldehyde and 15% polymerization inhibitor methanol, and its boiling point is 10 1℃.

Danger:

The main harm of formaldehyde is the * * effect on skin and mucosa. When indoor formaldehyde reaches a certain concentration, people will feel uncomfortable. More than 0.08m? The concentration of formaldehyde can cause envy, itchy eyes, sore throat, hoarseness, sneezing, chest tightness, asthma, dermatitis and so on. The high formaldehyde content in newly renovated rooms is the main cause of many diseases.

Is formaldehyde harmful to human body by controlling high temperature steam engine? No, more like. I remember that with the increase of temperature and humidity, the volatilization speed of formaldehyde will accelerate, so the high-temperature steam engine uses this principle to volatilize the hidden formaldehyde.

Is the smell of nail polish remover harmful to human body? You may not think that colorful attractive nail polish may cause different degrees of harm to health. To understand the harm of nail polish, we have to start with the ingredients of nail polish. The components of ordinary nail polish are generally composed of two kinds, one is solid components, mainly pigments, flash substances and so on; One is the solvent component of liquid, which mainly uses acetone, ethyl acetate (commonly known as banana oil), phthalate, formaldehyde, benzene and so on. There are many kinds of pigments, including natural pigments and artificial pigments. Of course, artificial pigments are the most widely used now, but many of them are toxic, and some of them also contain heavy metal elements, so they may be harmful to human body. Sudan red, as we all know, is a carcinogen. Natural pigments may also be mixed with harmful components, but they can be purified and removed, but the removal technology is quite difficult and costly, and is generally not adopted by manufacturers. I don't know that the solvent components of ordinary nail polish are basically toxic and harmful substances. Among them, phthalates, benzene and formaldehyde are the most powerful, followed by acetone and ethyl acetate. Among the harmful components of nail polish, phthalates will hinder the normal hormone balance, leading to serious reproductive damage and other health problems; Benzene and formaldehyde are carcinogens. It has also been reported that some ingredients in nail polish may have an impact on the health of the fetus, so we should pay close attention to them. In order to make nail polish dry quickly, a lot of acetone and ethyl acetate are added to ordinary nail polish. These two ingredients are characterized by easy volatilization, so nail polish dries quickly. However, acetone and ethyl acetate are dangerous chemicals. They are flammable and explosive. When volatilized, they will produce a dazzling smell and pollute the indoor air (their volume will expand 1000 times after volatilization). In the case of long-term inhalation, they may cause damage to the nervous system and have a strong * * * effect on mucous membranes. If you have a baby at home, it is even more dangerous to contact such ingredients. Another disadvantage of these organic solvents is that after repeated use on nails, nails will become discolored, brittle and weak, resulting in "nail damage rather than nail repair". So some instructions for nail polish say, "It's best to apply nail polish in a ventilated room, otherwise it may cause dizziness ..." This is a fact. These nail polish ingredients are harmful to human body all the time, so it is extremely important to buy safe nail polish and understand the harm of nail polish. Are you scared by the harm of nail polish mentioned above and then want to give up using these beautiful nail polishes? In the past, I might really consider this problem, but now I shouldn't worry about it. Why? Because the new technology and products have solved the harm problem of nail polish. Co *** ay natural nail polish from Canada is the world's top brand nail polish. It adopts innovative technology and successfully solves the damage problem of ordinary nail polish. Co *** ay did a lot of research on the ingredients of nail polish, and then made revolutionary innovations: it adopted a water-based formula and completely abandoned those dangerous chemical solvent ingredients; The solid components in Co *** ay natural nail polish are all derived from plants and minerals, which finds the "third way" between health and beauty and avoids the harm of ordinary nail polish. It is reasonable to believe that with people's increasing awareness of the ingredients and hazards of ordinary nail polish and their constant concern for health, natural nail polish will be welcomed by more people, and natural ingredients will be more and more applied to nail polish. And Co *** ay is undoubtedly the leader in solving the problem of nail polish harm.

Is the smell of nail polish harmful to human body? So you should buy some nail polish from regular manufacturers, and some inferior ones are made of paint.

Is the smell of Mihailing harmful to human body? It is harmful to light mosquito-repellent incense to repel mosquitoes.

In the hot summer, many people like to light mosquito-repellent incense to repel mosquitoes, but they don't know that this will do harm to the human body. In fact, the active ingredients of most mosquito-repellent incense are pyrethroid insecticides, as well as additives such as organic fillers, adhesives and dyes. Therefore, the smoke of mosquito-repellent incense contains many substances harmful to human body, which may induce asthma and other diseases.

According to estimates, the amount of particles released by lighting a roll of mosquito-repellent incense is roughly equivalent to burning about 100 cigarettes. The released ultrafine particles can enter and stay in the lungs, which may lead to asthma in the short term and cancer in the long term. Followed by mosquito-repellent incense base material.

Carcinogens produced by incomplete combustion of substances, and some compounds that can cause upper respiratory tract poisoning.

In summer, it is best to use safe and natural methods to repel mosquitoes, such as using mosquito nets or screens to keep mosquitoes out; Or put a few boxes of open cooling oil and wind oil essence in the bedroom. Of course, in order to eliminate mosquitoes from the source, it is best to clean up the places where mosquitoes are easy to breed, especially the still water and blocked sinks.

Teach you a few tricks to prevent mosquitoes and repel mosquitoes:

□ Don't leave the water in the container at home for too long. If mosquito larvae are found, they should be scalded to death with boiling water.

-Don't throw garbage in the shape of eggshells and containers. It is best to use a trash can with a lid.

-Pay attention to the intersection of floor drain and sewer when living on the ground floor.

Mosquitoes like to fly in dark places, and wearing dark clothes is easy to attract mosquito bites.

Mosquitoes like to park near the window sill before dusk, and they like to park on objects with darker indoor surfaces after dusk. According to this rule, they will get twice the result with half the effort.

-The drainage system of residential property should be checked, and it should be converted into culverts if possible, and the drainage ditch should be fortified with mosquito gates, and the sewer should be dredged every day if possible. All kinds of potholes, dead ponds, etc. It should be filled up, and if it is not satisfied, it is necessary to regularly apply pesticides.

-Household aquatic plants should change water regularly.

□ When using mosquito repellent drugs, it is best for the brand to use another drug to repel mosquitoes after two months of continuous use.

□ If you want to travel far away, be sure to cover the toilet to prevent mosquitoes from laying eggs.

● Eating garlic can effectively repel mosquitoes, because mosquitoes don't like the garlic smell secreted by the human body.

● Oral vitamin B is excreted from sweat after physiological metabolism, which will produce an odor that mosquitoes dare not approach. Take vitamin B 1 ~ 2 tablets orally one hour before going to bed, but don't take them in large quantities for a long time. In addition, dropping a few drops of vitamin B solution in the bath can also prevent mosquitoes.

Wear yellow, patterned and white clothes. In daily life, people are often bitten by mosquitoes, but people around them are indifferent, which is often the case. It turns out that mosquito bites have a lot to do with the color of clothes people wear. If you wear dark blue or brown clothes, you will be more vulnerable to mosquito bites. So you should wear light clothes in summer.

● Cleverly use cool oil and wind oil essence to put several boxes of uncovered cool oil or wind oil essence in the bedroom. Light mosquito-repellent incense, the smell is choking; Hanging mosquito nets makes the air dull. If you can drop a proper amount of essential balm on the whole mosquito before lighting it, the mosquito will not be choked, the room will be clear and the mosquito repellent effect will be good. If you can sprinkle a few drops of essential balm before entering the mosquito net, you can improve the air condition in the mosquito net and increase the mosquito repellent effect.

● Put mosquito repellent flowers. Before dusk, put 1 2 pots of blooming jasmine, Milan or roses indoors, preferably cordate telosma. Because mosquitoes can't stand the smell of these flowers and run away.

● Install orange bulbs indoors. Because mosquitoes are afraid of orange light, they can produce good mosquito repellent effect.

● Rub the dried Folium Artemisiae Argyi into rope shape, light it and put it indoors. Smoke can repel mosquitoes.

● Burning sun-dried tea leaves can drive away mosquitoes.

● Put 35 ml of sugar water or beer on the table or in an empty indoor wine bottle with many mosquitoes. When mosquitoes smell sweet wine, they will inject it into a bottle and be stuck to death by sugar water or beer.

Is the smell of hydrochloric acid harmful to human body? What harm does eating too much do to the human body depends on how you distribute it.

Is the smell of gun mud harmful to human body? number

The raw materials of stemming are mainly synthetic raw materials with high fire resistance, such as fused corundum, SiC,

Natural raw materials such as clay, bauxite, mullite and timely, and carbonaceous materials such as coke powder and graphite are used as auxiliary raw materials.

Is there any harmful smell in the fluorine room of refrigerator? Pure refrigerant should be colorless, odorless and non-toxic, but it will produce * * * toxic gas when it meets an open flame, so attention should be paid to ventilation.

Marble table smells of formaldehyde, is it harmful to human body? Natural marble tables will not smell of formaldehyde.

If it smells of formaldehyde, it is estimated that it is bonded with imitation marble or glue.

If so, it is harmful to the human body.

Is pesticide residue harmful to human body? Harmless and harmful to the human body are all brought from other places.