Difference Between Formaldehyde and Glutaraldehyde

Thekey differencebetween formaldehyde and glutaraldehyde is thatformaldehyde contains a single醛functional group, whereas glutaraldehyde contains two aldehyde functional groups。

Formaldehyde and glutaraldehyde are aldehyde compounds containing the -CHO functional group. These two compounds differ from each other based on the number of官能团present in a molecule.

内容

1.Overview and Key Difference
2.What is Formaldehyde
3.什么是戊二醛
4.Side by Side Comparison – Formaldehyde vs Glutaraldehyde in Tabular Form
5.概括

What is Formaldehyde?

Formaldehyde is the simplest aldehyde. Its chemical formula is CH₂O, and the IUPAC name is Methanal. Moreover, the molar mass of formaldehyde is 30 g/mol. At room temperature and pressure, formaldehyde is a colourless gas. It also has a pungent, irritating odour.

Furthermore, the melting point of formaldehyde is −92 °C, while the boiling point is −19 °C. Formaldehyde contains a carbon atom, two hydrogen atoms and an oxygen atom bonded to each other via covalent chemical bonds. The shape of the molecule is trigonal planar.

甲醛水溶液具有易燃性和腐蚀性。在制备甲醛溶液时，添加甲醇以防止甲醛作为多聚甲醛沉淀。在寒冷的条件下，由于大分子通过甲醛聚合形成，甲醛倾向于在溶液中形成浑浊。

There are many applications of formaldehyde in industries and other areas. It is used as a precursor for many organic synthesis processes; for example, resins such as melamine resin, phenol-formaldehyde resin. In addition, it is used as a disinfectant. It can kill bacteria and fungi on wood surfaces. However, formaldehyde is toxic and known to be carcinogenic.

什么是戊二醛？

Glutaraldehyde is an aldehyde molecule that is sold as “Cidex”. It is common as a disinfectant, medication, preservative, and fixative. The chemical formula of this compound is C₅H₈O₂。它是一种透明的液体，是刺激性的气味。同样，这种液体物质与水混乱。

Glutaraldehyde is useful as a disinfectant, and we can use this liquid to sterilize surgical instruments and other areas of hospitals. Glutaraldehyde can be used as a medicine, and we can use it to treat warts on the bottom of the feet. This substance is applied in its liquid form.

然而,可能有一些glutara的副作用ldehyde, including skin irritation. Exposure to large amounts can cause even nausea, headache, and shortness of breath. Therefore, we need to use protective equipment when handling glutaraldehyde. Generally, glutaraldehyde is effective against many types of microorganisms, such as spores.

When considering the mechanism of action in glutaraldehyde, it tends to react with amine groups and thiol groups, similar to most of the aldehydes we know. (amines and thiols are common functional groups in proteins). Moreover, it is a potential crosslinker.

What is the Difference Between Formaldehyde and Glutaraldehyde?

Formaldehyde and glutaraldehyde are aldehyde compounds containing the -CHO functional group. The key difference between formaldehyde and glutaraldehyde is that formaldehyde contains a single aldehyde functional group, whereas glutaraldehyde contains two aldehyde functional groups.

此外，甲醛中等毒性，而戊二醛则是剧毒的。此外，甲醛被用作许多有机合成过程的前体，作为消毒剂等。而戊二醛被用作消毒剂，药物，防腐剂和固定剂。

The below infographic lists the differences between formaldehyde and glutaraldehyde in tabular form for side by side comparison.

概括– Formaldehyde vs Glutaraldehyde

甲醛是最简单的醛化合物。戊二醛是一种二醛。甲醛和戊二醛之间的关键区别在于，甲醛包含一个单个醛功能组，而戊二醛含有两个醛功能组。

Reference:

1.“甲醛。”国家生物技术信息中心。美国国家医学图书馆，PubChem化合物数据库，Available here。

Image Courtesy:

1. “Structural formula of formaldehyde” By Chem Sim 2001 – Own work (Public Domain) viaCommons Wikimedia
2. “Glutaraldehyde structure” By Edgar181 – Own work (Public Domain) viaCommons Wikimedia