Home » Analysis of the composition of dishwashing powder and whether it is harmful for long-term use

Analysis of the composition of dishwashing powder and whether it is harmful for long-term use

by nadlia
0 comment 56 read

LAfter buying a dishwasher, many people will worry about washing the tableware for the first time. This thing also adds dishwashing salt, dishwashing powder and brightener. Are these things poisonous and harmful? , Is there any residue on the tableware after washing. After all, things like dishwashing powder are still very unfamiliar. It is normal for anyone to have some reservations about such unfamiliar things. In particular, after using the bright dish washing blocks that come with many dishwashers, there will be a strong chemical smell when the door of the dishwasher is opened, which increases the user’s worry about the residue of washing consumables.

Below, nada2.com will discuss this issue from various angles.

| brand of washing supplies

The washing consumables (dishwashing salt, dishwashing powder, polish, etc.) of the dishwasher for the first time are bright dishes, right? It’s not just you, almost every dishwasher user in the world uses a finish for the first time in the dishwasher (go buy). Finish occupies about 90% of the global dishwasher consumables market. The dishwashing powder you use now is used by Americans and Europeans. Of course, there are still some nuances in different regions of the Bright Dishes dishwasher consumables. However, the main reason for this phenomenon is that consumers in different regions have different eating habits and different dishwashers (there are differences in washing methods).

FInish is a brand of Reckitt Benckiser Group. It is normal to have never heard of this brand before using a dishwasher, because this brand only makes dishwasher consumables. But Reckitt Benckiser does not. It also has Durex, Dettol, Man Yan Shu Ning and other brands in China. You are familiar with it all at once, right?

From a brand perspective, Bright Disc is completely reliable. Not only in China, but almost all the dishwasher manufacturers in the world cooperate with the washing consumable brands to be Bright Dishes. Bright Dishes is much larger than the manufacturers of many dishwashing liquids we used to wash dishes in the past, because the brands of dishwashing liquids are very regional, and each region has its own best-selling brand.

Of course, in addition to bright dishes, there are still many other reliable and well-known domestic and foreign brands of dishwasher consumables to choose from. Before that, I divided them into two articles to introduce foreign and domestic dishwasher consumables. Although at that time it seemed that the brands of consumables in the domestic market were basically completely covered, but in the past two years, many more have emerged. If I have time, I will update these two articles.

| Dishwashing powder residue problem

Let’s start with the washing procedure of the dishwasher. The last step of the dishwasher is drying, and the step before that is rinsing, similar to the usual manual dishwashing, rinse with clean water after washing. Dishwasher flushing is high-pressure flushing through the rotation of the spray arm, while manual dishwashing is mostly rinsed, at most a small rinse with a tap. In contrast, the washing of the dishwasher is better than manual rinsing. If we must say residue, the residue of manual dishwashing will be much higher.

Before the rinsing stage, it is the washing stage of the dishwasher, the temperature can reach above 70° (the maximum temperature for manual dishwashing is 42°), the higher the temperature, the stronger the activity of most chemical substances, the faster the reaction, and the natural residue Low.

When manufacturers choose the formula of dishwashing powder, they have already considered the problem of residue, not to mention whether it is poisonous. Moreover, the European Union, the United States, China, and most countries in the world have mandatory standards for detergents. Products produced by regular manufacturers and used correctly are generally safe and sound. Of course, no matter how safe dishwashing powder is, it cannot be eaten like other detergents.

As for dishwashing salt, it also uses consumables for every wash. Its safety is analyzed in the main components of dishwashing salt and whether it is harmful for long-term use. There has been a very detailed analysis, and it also mentions a cheaper Dish salt substitute.

| Is Dishwashing Powder Harmful To Pregnant Women?

# Added on January 12, 2019: According to the background data, many people came in because they were worried that dishwashing powder would be harmful to pregnant women. In fact, at the beginning, I thought this was a problem without worry, because my family just brought a baby and it was very healthy. , I have been using dishwashing powder, brightener, and dishwashing salt for bright dishes throughout my pregnancy, and I don’t see any adverse effects at all.

But later, in the process of consulting relevant information, I really found that using a dishwasher may be unfavorable to pregnant women. The problem is not with the dishwasher or dishwashing powder, but with the tableware. The specifics are discussed below.

In order to be serious, I found some edge-to-edge information through searching, but my English is not good, so the translation may be wrong. It is recommended to poke the link to read the original text if you are able, or check it yourself (if it is convenient, you can query it. information to share on the message board below this article).

Information 1: The US FDA mentioned in the article “Food Safety for Pregnant Women” that it is recommended to use a dishwasher to wash cutting boards during pregnancy.

Information 2: Environment Canada pointed out in the article “Lead in ceramic crockery and pottery-making” that using lead-containing ceramic tableware, if washed in a dishwasher, may damage the surface of the tableware, and then allow the lead to enter the human body through food. Regarding which ceramic tableware is more likely to contain lead, I found a related question and answer on Zhihu, you can refer to it.

Fact 3: In the “EMPOWER Home Visiting Guidebook”, the Arizona Department of Health Services recommends using a dishwasher to wash baby bottles and nipples, although some experts recommend sterilizing them in boiling water for another 5 minutes.

In addition to the above information, there are actually many suggestions for using a dishwasher, so I won’t repeat them here. These three articles are relatively representative.

Therefore, I think that if the dishwasher is used normally and the tableware is safe, there is no need to worry about this problem at all. Of course, it is another matter if there is obvious residue on the tableware after washing in the dishwasher. At this time, you can check what is wrong, whether it is the dishwasher itself or the dishes are not placed correctly during operation (usually this is more the case).

If you still want to inquire more about the impact of dishwashers and consumables on pregnant women, it is recommended to use Google, and add “inurl:gov” in the space after the keyword, so that most of the searched information is from authoritative organizations, which is more reliable . It is not recommended to search for relevant information on We-Media such as WeChat official accounts, Toutiao, etc. Even if there is, there must be a source of information, otherwise it is likely to be unreliable. For the sake of traffic, these people dare to write anything.

If you are still worried about dishwashing powder, you can change to Seventh Generation (go buy), which claims to be an all-natural dishwasher consumable.

In addition, there is another health hypothesis about dishwashers: because the dishwasher is too clean, it will reduce children’s chances of being exposed to bacteria, which in turn increases the possibility of children developing allergies in the future. Whether this hypothesis is correct or not, moving the dishwasher may make children more susceptible to allergies is just a “hygiene hypothesis”.

In fact, from my experience, in comparison, formaldehyde residues in home decoration, second-hand smoke, and cosmetics have a greater impact on pregnant women, and they should be paid attention to. Regular pregnancy check-ups, more rest, proper exercise, and relaxation.

In addition, if you are bringing a baby for the first time, you must prepare the delivery bag as much as possible in advance. Don’t be in a hurry like I was at that time. There are many things in the delivery package, dozens of kinds, and it’s a headache to prepare as much as possible. If you are not sure, you can refer to the following article. A small suggestion: no matter what the family’s economic situation is, try to choose better ones for babies to directly contact and use, and ordinary ones for mothers.

What’s more, if you buy one or two reliable parenting books, you can avoid a lot of detours. When something happens to your baby, even if you rummage temporarily, it will let you know what’s going on and give you a lot of peace of mind. .

| Main ingredients in dishwashing powder

Here, the main components of the dishwashing powder are analyzed. The basic components of most brands of dishwashing powder are similar, mainly containing the following substances.

Sodium Carbonate (Content 10 ~ 15%)

The common names are soda (not baking soda), soda ash, and it is often called “alkali” in life, but the actual classification belongs to salt, not alkali. Widely used in domestic washing, acid neutralization and food processing, etc.

In dishwashing powder, it mainly plays the role of alkaline medium, because in alkaline medium, it is conducive to the emulsification, dispersion and removal of grease and dirt.

However, sodium carbonate is weakly irritating and corrosive. Direct contact can cause skin and eye burns, and ingestion can cause digestive tract burns, mucosal erosion, bleeding and shock. Therefore, dishwashing powder must not be exposed to children.

However, because sodium carbonate itself is easily soluble in water, 20 grams of sodium carbonate can be dissolved in 100 grams of water at 20 ° C, and the solubility is the highest at 35.4 ° C, and 49.7 grams of sodium carbonate can be dissolved in 100 grams of water. To wash the dishes once, the dishwashing powder is only about 20g, not to mention the amount of water, plus the final rinse, so there is no need to worry about the residual sodium carbonate.

Sodium citrate (content > 15%)

It is often used as a food additive (acidity regulator, stabilizer) in various food formulas. It is safe and non-toxic. Since the raw materials for the production of sodium citrate are basically derived from grain, it will not have adverse effects on human health. The Food and Agriculture Organization of the United Nations and the World Health Organization do not impose any restrictions on the daily intake of sodium citrate.

Sodium citrate mainly plays a chelating role in dishwashing powder, so that the calcium and magnesium ions contained in the water are chelated to prevent the formation of insoluble salts of calcium and magnesium and cause pollution to tableware. If there is no sodium citrate, calcium and magnesium ions may combine with surfactants and solidify on the tableware to form scale.

The main component of various early detergents (washing powder, dishwashing liquid, dishwashing powder, etc.) limit. Sodium citrate later appeared in various detergents as its substitute. Those who are older, remember that the news often broadcast news about eutrophication of water bodies a few years ago? Most of the later phosphorus-free laundry detergents used sodium citrate as a substitute.

Sodium percarbonate (content > 15%)

In addition to the general protein, fat, and starch dirt on the surface of the tableware, there are also some stains such as coffee stains, tea stains, tomato juice, and red wine stains. These stains are sometimes difficult to remove by surfactants due to pigments, so Sodium percarbonate is added to dishwashing powder, as an oxidizing agent, which mainly relies on its decomposition of colored dirt to remove it (bleaching effect), and has the effect of sterilization and disinfection.

The active oxygen generated after the decomposition of sodium percarbonate will cause damage to the active substances in the cell, such as protein and nucleic acid, so as to achieve the purpose of sterilization. Especially, it has special curative effect on common pathogenic microorganisms such as hepatitis virus and Escherichia coli.

However, because active oxygen is too active, it is easy to oxidize and has excellent water solubility, so there is no residual problem, and it will not cause poisoning or cumulative poisoning.


It mainly refers to protease and amylase, which are often applied to dishwashing powder as a combination.

Milk, meat, eggs, fish, and shrimp are all foods with high protein content. The tableware will inevitably be stained with protein after use, especially the tableware after steaming egg custard, which is difficult to clean. The effect is not good, and protease can catalyze the decomposition of protein into amino acids or peptides to achieve the purpose of decontamination.

Starch is the most common carbohydrate in the human diet and widely exists in staple foods such as potatoes, wheat, corn, rice, and cassava. Amylase is used to remove insoluble starch residues on tableware.

Enzyme preparations are widely used in washing products, and there are many kinds of enzyme preparations in washing powder. But as far as these two enzymes are concerned, they exist widely in life. Proteases are widely found in animal organs, plant stems and leaves, fruits and microorganisms; amylases, well, you have them in your saliva.

nonionic surfactant

Surfactants play an important role in dishwashing detergents. Dirt on the surface of tableware is mainly composed of starch, fat, and protein. Surfactants can remove dirt by wetting, emulsifying, and dispersing. Therefore, in the formulation of dishwasher consumables, nonionic surfactants with good degreasing effect and low foaming are mainly used for compounding (usually anionic surfactants have high foaming, and a lot of foaming will be generated during washing) , and at the same time, combined with the unique rotating jet water flow of the dishwasher, it can jointly remove food residues on the surface of the tableware.

Surfactants are also very water soluble and can be completely dissolved in cold water. So there is no risk of residue.

The above are the main ingredients of dishwashing powder, and there are dozens of other ingredients. Although it is impossible to list them one by one, based on the development of detergents for hundreds of years, the mature manufacturing process of detergents, and the corresponding legal provisions , It is completely trustworthy that chemical engineers have considered and tested the toxic side effects and residual problems of long-term use of washing consumables when selecting formulas and making dishwashing powder.

Use dishwashing powder in the correct way without worrying about safety issues at all.



You may also like

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.