Paraformaldehyde
Basic information
1.Molecular formula:H(CH2)nOH n represents degree of polymerization
(numbers of molecules)usually 8~100
2.Physical-Chemistry property
1)physical property:A mixer of polycondensstion formaldehyde with different molecular weight,
ready to resolve in water and become liquid formaldehyde solution,flammable and highly
toxic,long time touching will make skin harden.
It’s solid white particles and powder with irritant spicy smell,fierce germicidal power.
2)chemical property:oxidation of formaldehyde and oxygen in the air becomes formic acid
which is of highly toxic.The high
molecule resin we can get from its condensation reation with aromatics,phenol,amine,amide,
carbonhydrate,protein and so on.
3.Quality specification(our enetrprise standard)
Item first grade second grade
Assay% 95±1 95±1
Appearance white particles or powder white particles or powder
lron in ≤% 0.002 0.002
Free water ≤% 1.0 3.0
Residue on ignition≤% 0.02 0.02
PH value≤% (formic acid) 0.08 0.05
Water solubility≤minute 80 80
4.Application industries and main usages
Mediclture-medically used as vessels of sterilization and disinfection agent,preservatives,specimen
storage agent.
Agriculture-pesticide,seed soaking agent and herbicide,such as plyphosate,alachlor,butachlor and
acetochlar.
Chemical industry-production for coationg,paint,adhesives,urea rdsin and Melamine resin.
Textile industry-for fibre’s tensile strength.