Are isopropanol and isopropyl ethanol the same substance?

This post was last edited by qugd on 2021-1-20 at 10:03. The name for isopropyl ethanol does not conform to any standard nomenclature rules nor to those used for product names; it is likely a fake English-based chemical name generated by machine translation. Your sources suffer from a severe lack of chemical expertise. When written alone, alcohol can be referred to as ethanol; however, when it is preceded by the name of a functional group, it should be translated directly as alcohol of a certain functional group. Based on the CAS number, these are completely different chemicals, but in terms of molecular weight, they are indicated as the same chemical. I think it was made up by some unqualified chemical dealers in the country, and then the mistake has been passed on from one person to another until today. If you are looking up professional information, try to use professional search tools. Take a look at the screenshot below:

This post was last edited by Extend Yan’an on 2021-1-20 at 14:51. Such a substance should exist; the chemicals listed by the testing center correspond to isopropyl ethanol as mentioned in Baidu Baike. Overview of the properties of isopropyl ethanol cleaning agents: BJ-205 isopropyl ethanol cleaning agent is a highly efficient and environmentally friendly solvent developed recently for cleaning precision electronics and metal hardware. It belongs to the category of organic composite solvents, and can be used without any need to modify existing equipment. It has successfully replaced traditional solvents like AK-225 and has become the preferred choice for industrial cleaning purposes. Main advantages: 1. Unparalleled stability: BJ-205 contains unique stabilizing components that are recovered through distillation; its physical properties remain unchanged, and it does not produce chloride ions nor cause acidification. The utilization rate is more than five times that of the AK-225. 2. Non-corrosive: BJ-205 is a neutral, non-polar solvent; its pH value does not change after cleaning, remaining around 6–8. It does not dissolve most plastics, and it causes no corrosion or rusting on steel, copper, aluminum, or other non-ferrous metals. Additionally, it helps to prevent corrosion of equipment. 3. Strong cleaning ability: The KB value of BJ-205 is 73, while that of AK-225 is 35; they are the substances with the strongest cleaning power among existing cleaning solvents, and can completely remove oils, greases, and other types of contaminants. 4. Easier to use with ultrasonic cleaners: BJ-205 has a high steam density, allowing for easy control of the solvent vapor level in cleaning systems. It also has low latent heat properties, enabling high-level solvent condensation during operation, resulting in excellent cleaning effects.

http://www.ichemistry.cn/ can also be accessed through Ai Huaxue

This post was last edited by qugd on 2021-1-20 at 19:54. It would be best to check it in the CAS index of the American Chemical Society, or on CA. It seems that your level of chemistry knowledge is less than one-tenth of mine; professional chemical knowledge requires specialized resources, while a passion for chemistry is merely a tool for amateurs – it is by no means a tool for accessing professional chemical information. A chemical substance has only one unique CAS registry number; since you’re not a chemistry professional, you won’t be able to understand this information. In some of China’s so-called public service agencies, there are very few people with professional expertise, even fewer with knowledge of specialized organic chemicals, and still fewer who are able to make accurate judgments and provide reliable reference information. Don’t be stubborn when talking to professionals. The screenshot shows information regarding CAS 1344575-38-7 from the American Chemical Society; take a look at the information for 67-63-0 as well

This post was last edited by qugd on 2021-1-20 at 19:56. You can check it here: https://www.drugfuture.com/chemdata/. The website you mentioned is run by people who sell reagents; do you think that everyone who shouts loudly must be a traditional opera actor?

This post was last edited by yyszyj on 2021-2-5 08:27. This image must have been taken from the Internet; sometimes it’s necessary to identify such content from the web. Literally speaking, isopropyl alcohol and isopropyl ethanol are definitely different, not to mention that their CAS numbers also differ. Firstly, the information regarding isopropanol is generally correct; isopropyl ethanol should be C5H12O, and its name could be 1,2-dimethylpropanol.