The product is colorless or yellowish clear and bright liquid with
slight irritating smell, and can be dissolved in organic dissolvent
such as water, ether and ethanol. In water solution, the product
does not exist much in free state; instead,it makes appearance as
hydrates with different forms.and most of them are hydrates with
The product is reactive in property, and liable to polymerize and
oxidize, which will react with compounds containing active oxygen
and nitrogen. The reaction of the product with protein is mainly
carried out between the carbonyl group of the former and the amino
group of the latter. Among the known aldehydes, the product is one
of the best cross-linking agents for proteins.
The product has a small influence on the activity of enzyme, and
most of enzymes can be fixed under controlled condition to
cross-link without losing their activity. According to its
outstanding characteristics, the product has drawn special concern
from people and been put at broad application.