The recently exposed news that furniture formaldehyde has exceeded the standard and it is difficult to defend rights has immediately caused a strong response among the citizens.
The complaint phone calls are all related to decoration pollution. "It has been three years since the new house was renovated, but it has been unable to move in.
It's unbearable. "I bought two sets of furniture and returned two sets of furniture. Now I dare to sleep on the floor." "The iron door of the iron bag is to prevent thieves,
But it also brought in pollution. "
With the questions raised by many citizens, I visited many home stores in the past two days and found that the "Furniture Instructions" mandated by the state was difficult.
Begging, the public has no way of knowing the environmental quality indicators and the content of toxic substances when buying furniture. In the interview, some furniture vendors even said: "Now furniture formaldehyde
There is nothing that does not exceed the standard, only the difference between being too strong and not being bad. "
Renovated three years so far and lived outside
The house is used to live, but in Ms. Wang's view, the house has become a guilt for spending money. Accompanying Ms. Wang to her "new house" where she has been idle for three years,
As soon as the door opened, an irritating odor rushed across the face, quickly covering his nose. "It's been three years, the taste is still so great, I'm really right." Ms. Wang introduced
Shao, in order to facilitate her granddaughter to go to school nearby, she spent hundreds of thousands of yuan to buy this 64-square-meter second-hand house, only to stay for two or three days after the decoration, she and her grandson
The woman had symptoms of sore throat and cough. She hurriedly moved out of her new home and rented a room outside to stay temporarily.
"I have used everything in the past three years. I came here every day in the first year to ventilate. In the second year, I closed the doors and windows during the day.
Come here to ventilate. In the third year, I ran two consecutive testing institutions, spent thousands of dollars in vain, and labored every day, but the irritating smell in the house was not reduced at all.
less. "At the beginning, Ms. Wang believed that the culprit was those new sets of furniture, but the test was basically qualified. Then Ms. Wang focused on the source of pollution
For the door and the door frame, she took the door down and sent it for destructive testing. For the detection of wood, the results still showed that the formaldehyde did not exceed the standard. This king
The lady didn't move anymore, and now there are walls and floors left. "It seems that you still have to use the elimination method to determine the source of pollution."
Like Ms. Wang, there are not many people who are forced out of their homes by "poison furniture". Summarizing the different experiences of many citizens, it was found that children ’s furniture (children
Furniture decoration renderings) such as desks, computer desks, bed furniture and anti-theft doors have become the three major focal points of "poisonous furniture" complaints.
Ms. Cheng called and said that when her son was 6 years old, she bought a set of children ’s furniture for 3800 yuan, including a bunk bed and a set of small
Tables and chairs and a computer desk. "At that time, in order to avoid the poisoning of the home and the children, I chose all the solid wood furniture.
problem occurs. "Ms. Cheng said that after the furniture was bought back, it always had a strong pungent smell. Within a week, the 6-year-old son had nausea and head
Halo
Symptoms, followed by red dots and other symptoms. In this regard, experts from the testing agency said that because children ’s physical sensitivities are
It should be the fastest and the strongest, so excessive formaldehyde in children's furniture is often easy to find.
Copper(II) Sulfate, also known as cupric sulfate, or copper sulphate, is the inorganic compound with the chemical formula CuSO4(H2O)x, where x can range from 0 to 5. The pentahydrate (x = 5) is the most common form. Older names for this compound include "blue vitriol", "bluestone", "vitriol of copper", and "Roman vitriol".
The Copper Sulfate Pentahydrate (CuSO4·5H2O), the most commonly encountered salt, is bright blue. It exothermically dissolves in water to give the aquo complex [Cu(H2O)6]2+, which has octahedral molecular geometry. The structure of the solid pentahydrate reveals a polymeric structure wherein copper is again octahedral but bound to four water ligands. The Cu(II)(H2O)4 centers are interconnected by sulfate anions to form chains. Anhydrous Copper Sulfate is a white powder.
Analytical reagent
Several chemical tests utilize copper sulfate. It is used in Fehling's solution and Benedict's solution to test for reducing sugars. It is also used in the Biuret reagent to test for proteins. Copper sulfate is used to test blood for anemia.
In a flame test, its copper ions emit a deep green light, a much deeper green than the flame test for barium.
Organic synthesis
Copper sulfate is employed in organic synthesis.
Feed and food additive
It can be used in food or feed additives. It corrects copper deficiencies in the soil and animals and stimulates farm animals' growth.
Copper sulfate is used as an anti-fungal agent to protect seeds against fungus and to protect horse hooves from infection. It inhibits growth of bacteria such as Escherichia coli.
Etching
Copper sulfate is used to etch zinc or copper plates for intaglio printmaking. It is also used to etch designs into copper for jewelry, such as for Champlevé.
Dyeing
Copper sulfate can be used as a mordant in vegetable dyeing. It often highlights the green tints of the specific dyes.
Copper Sulfate
Copper Sulfate,Copper Sulfate Pentahydrate,CuSO4.5H2O,
Jiangsu Kolod Food Ingredients Co., Ltd. , https://www.kolodchem.com