Glass itself has no color; It is best to use a colorless and transparent cup.
There are two possibilities for producing colored glass:
A natural color, the original glass contains some minerals, which makes the glass colorful;
B Most colored glasses are made by adding pigments during processing, and these pigments generally contain heavy metals. However, coloring cannot be used as the cause of glass problems.
If the colored glass is a surface decal, it is easy to understand that the surface coating falls off during use. If the color of colored glass made by adding pigment disappears in the process of processing and manufacturing, that is, colored substances are released after long-term use.
NAPPA is selected for high-end water and wine containers!
Is colored glass poisonous? Can colored glass be used?
Colored glasses suggest that you choose carefully. Because:
1, the glass itself has no color;
2. There are two possibilities for producing colored glass:
A natural color, the original glass contains some minerals, which makes the glass colorful;
B Most colored glasses are made by adding pigments during processing, and these pigments generally contain heavy metals. However, coloring cannot be used as the cause of glass problems.
Napa for high-grade water vessels and wine vessels
Is colored glass poisonous?
Generally speaking, the pigment in glass will not affect your health. It is different from other containers. You can use it without any problem. I use green glass myself.
Is colored glass harmful to health?
Colored glass cannot be used as a reason why glass is toxic.
Whether colored glass is toxic or not depends on whether it is colored glass or surface decal.
Natural color, the original glass contains some minerals, or decals are applied to the finished glass to make the glass colorful;
Most colored glasses are made by adding pigments during processing, and these pigments generally contain heavy metals.
If the colored glass is a surface decal, it is easy to understand that the surface coating falls off during use, and it should be non-toxic. However, if the color of colored glass made of pigment disappears during processing, that is, colored substances are released after long-term use, it is toxic.
Is long-term use of transparent glass harmful to health?
harmful
Why is glass poisonous? What kind of glass is poisonous?
Not all glass is poisonous. Ordinary transparent glass is non-toxic, because it is made of raw materials such as soda ash, limestone and timely, which is non-toxic and harmless. Other crystal glasses coated with pigments are toxic. Pigments generally contain harmful or even highly toxic elements, such as heavy metals such as lead, chromium, cadmium, nickel, copper and manganese, and nonmetals such as arsenic, fluorine, chlorine and sulfur. Artificial crystals used to make crystal glass generally contain lead, and lead-free crystals contain potassium, so don't use this glass to hold food.
Why is glass poisonous? What kind of glass is poisonous?
Why is glass poisonous? According to relevant data, the glass sold by McDonald's contains cadmium, which will cause harm to human body. A few days ago, the person in charge of a glass production enterprise also told the author that the glass that causes poisoning is usually crystal cups with lead and glass coated with pigments. Painted glass is toxic, although colored glass can give people a pleasing feeling and add a lot of interest to our lives. However, the colorful world of glass flowers contains harmful and even poisonous elements, such as heavy metals such as lead, chromium, cadmium, nickel, copper and manganese, and nonmetals such as arsenic, fluorine, chlorine and sulfur. In the process of industrial production, these elements will be released and gasified, polluting the atmosphere and water sources, thus causing harm to human beings. Among them, the cadmium contained in the glass coated with pigment will also have a * * effect on the respiratory tract, and long-term contact will cause loss of sense of smell, gingival macula or gradual yellow circle. Cadmium compounds are not easily absorbed by intestine, but can be absorbed by human body through breathing and accumulated in liver or kidney, causing harm, especially to kidney. It will also lead to osteoporosis and industrialization. Crystal glass is toxic and contains lead. If it is used to hold boiled water or acidic drinks, the lead in the glass will dissolve in water when it meets boiled water. When holding acidic drinks, toxic substances harmful to human body will be induced by reaction with acidic substances. At present, there are two kinds of crystal glass circulating in the market: lead-free crystal glass and lead-containing crystal glass. The former generally contains potassium, mostly high-grade handicrafts and marked on the outer packaging; The latter contains lead, that is, crystal glassware common in some supermarkets and stalls, and its lead oxide content can reach 24%. In daily life, when a cup made of artificial crystal containing lead is used to hold acidic drinks, such as alcohol, cola, honey, fruit juice containing fruit acid or other acidic foods. Lead ions may form soluble lead salts, which are ingested by the human body with drinks or food, seriously endangering health. According to Professor Zhu, director of the Department of Poisoning, West China Fourth Hospital of Sichuan University, lead mostly passes through the blood-brain barrier in the form of free or inorganic compounds, which is harmful to the vascular-rich central nervous system-hippocampus and cerebral cortex. When the blood lead concentration reaches 30 μ g/L, women will have neurotoxic reactions such as general weakness, dizziness, headache, anemia, memory loss, muscle and joint pain, constipation and irregular menstruation. Symptoms such as arteriosclerosis, digestive tract ulcer and fundus hemorrhage are also related to lead pollution. When the blood lead level is high, the patient's mouth has a metallic taste, and the water in the patient's blood vessels penetrates into the brain stroma, which will cause brain edema, cerebral hemorrhage, demyelination and other diseases. Long-term intake of lead and its compounds, excessive lead will be deposited in bones, burying hidden dangers of fractures. To this end, relevant experts advise consumers to avoid using glasses with paint on the inner wall and low-priced lead-containing crystal cups when choosing glasses to drink water. How to distinguish lead-free glass from lead-containing glass is explained in detail in the glass information of the cup pot network. You may wish to refer to its identification method and choose a good cup that really conforms to healthy drinking water for yourself. You may be interested in: Why do glasses explode easily? How to prevent glass explosion, how to clean glass scale, how to clean glass, how to distinguish the use temperature of crystal glass from ordinary glass, what kind of glass can withstand high temperature drinking water, and how to identify the quality of glass?