The one-stop guide to working with irritants: from hazard classification to mitigating risks What are irritants? Chemical irritants are substances/mixtures that may cause: (i) reversible irritation upon contact with the skin or eyes, (ii) allergic reactions (e.g. allergic contact dermatitis, irritant contact dermatitis), (iii) acute toxicity leading to serious adverse...

The one-stop guide to working with corrosive material: from hazard classification to tips for handling hydrofluoric acid What are corrosive substances? Corrosive materials cause irreversible damage to body surfaces or metals after exposure by means of a chemical reaction. Examples include many strong acids and bases (pH ≤ 2 or...

A guide for preventing and extinguishing electrical fires How to put out electrical fires & 6 other fires that are not compatible with water？ It is vital to stay calm, act swiftly, and use the correct extinguisher when confronted with a laboratory fire that is small enough to be contained. Take...

Chemistry lab eye protection  Keywords:  lab eye protection  Why is protective eyewear important? We rely on our eyes for virtually everything, which we may take for granted until an accident happens. Protective eyewear protects us against physical, chemical, biohazardous, electrical and/or heat hazards that may cause (i) corneal abrasions to the...

Ynamides (MYMsA and MYTsA) are stable，easy to handle, and able to avoid racemization during the activation of carboxylic acid and formation of amide bond. Ynamides (MYTsA and MYMsA, Fig. 1) are a type of reagents, developed by Dr. Junfeng Zhao, for direct condensation of acids followed by amines.   Advantages...

One-step Multi-functionalization of Aromatic Alkynes Aromatic alkyne allows efficient ortho di-functionalization of the aromatic ring. For example, the aryne precursor Kobayashi can functionalize two groups at the 1,2-position of the benzene ring. Would it be possible to achieve tri-functionalization of aromatic rings by aromatic alkynes? Dr. Yang Li has developed...