Application and comparing’s of EG and PG in antifreeze
The difference between the above two substances in antifreeze is due to their toxicity and efficiency. Ethylene glycol shows high efficiency in heat transfer but propylene glycol has lower toxicity. In the following, we will further study these two substances and their application in antifreeze. what is glycol? Glycol is an organic chemical compound that belongs to the family of alcohols. In glycols (also called diols), the molecule contains two groups of hydroxyl attached to carbon atoms. These substances are classified as alcohols. The following figure shows the molecular structure of these two substances Note that ethylene glycol is available in three forms: monoethylene glycol, diethylene glycol and triethylene glycol. But monoethylene glycol is more widely used as an antifreeze among other types of ethylene glycols. Ethylene glycol propylene glycol Propylene glycol has heat transfer properties in the temperature range of -50 degrees Fahrenheit to 350 degrees Fahrenheit. Although both…
Groups of chemicals use as detergent
linear alkylbenzene sulfonate Sodium lauryl sulfate Other detergents Ammonium Lauryl Sulfate /ALS Triethanolamine Lauryl Sulfate / TLS Diethanolamin /DEA Triethanolamin/ TEA Betaine NaOCl/ Sodium hypochlorite NaOH/Sodium hydroxide Sodium carbonate/soda ash The groups of surface-active agents are use in detergent: Anionic detergent that is including soap and the largest synthetic detergents Cationic detergent that produces electrically positive ions in solution. Nonionic detergent it produces electrically neutral colloidal particles in solution. Molecules in detergent Detergents are substances that remove fat and dirt particles from fabrics or other objects and are prepared in different types. The first ingredient made as a detergent was soap. Soap is hundreds of years old. The last soap machines discovered date back to 2000 years ago. When soap has been done making ? Soap making has been done industrially and in large quantities for 700 years, and it has been 200 years since its manufacture changed and became…
Temple of air purification
Farming rubber sustainably is complex and expensive, and requires an overhaul of traditional farming practices. Deforestation has historically been driven by high rubber prices, which is why it is critical that farmers increase yield to ensure that, when prices rise again, increased rubber production does not come at a cost for forests. Unsustainably-managed rubber plantations can create severe air pollution if, to clear land quickly and cheaply, it is slashed and burned, which has a major impact on forest flora and fauna Xian in Shaanxi province Beijing, one of the most polluted cities in the world, has created a work that may correct the weather for beauty. His design is a seven-meter metal structure with an air purifier inside. The tower sucks in polluted air and blows clean air. The idea for the largest air imaginer was hidden during a trip three years ago. The designer Dan Rosegard who, after…
Future of chemistry in Malaysia
Different and diverse properties of organic and inorganic chemicals have caused the need to use these materials over time in various industries such as oil and gas, agricultural industries, water treatment, health industries, etc. This issue has led to an increase in the production of raw materials. Chemical in the world. The production of organic and inorganic chemicals on a global scale in 2020 _2021 increased by 1.2% compared to the same period last year, and the major share of growth was related to the countries of Asia The manufacturing of chemical materials and products helps to achieve the goals of the country’s development programs by producing the inputs required by other economic sectors and with a lower proportion of receiving inputs from other sectors. Increasing the amount of non-oil exports and increasing the average annual growth of the country’s value-added is one of the positive consequences of the growth…