Formaldehyde
1. Performance:
Formaldehyde is part of color less combustible gas,which has great irritating and suffocating impact on nose or eye of human being.proportion is 0.8153(-20oC).Freexing point is :-92oC,Boiling point is -19.5oC,that is easily dissolved in water with strong reducibility.Generally,industrial formaldehyde is the water solution contained 37% of formaldehyde and the proportion thereof is 1.075-1.114(20oC),Boiling point is 101oC.
2. Usage:
Formaldehyde,one of the organic raw materials that in frequent use,is extensively used in the production of ureaformaldehyde resin,resinox,acetal resin,melamin resin,urotropin,penaterythritol,vinylon,fibre and the like.It also belongs to the raw materials of dynamite,colourant,medicine,pesticide and the like as well as disinfectant,insecticide,fumigation in warehouse.
Item Index Grade |
High-class |
First-class |
Qualified-class |
Chrominance (Platinum-Co)No.,%,≤ |
10 |
--- |
--- |
Content of formaldehyde,% |
37.0-37.4 |
36.7-37.4 |
36.5-37.4 |
Content of carbinol,%,≤ |
12 |
12 |
12 |
Acidity (by methanoic acid),%,≤ |
0.02 |
0.04 |
0.05 |
Content of Fe PPM ≤ |
1(mess)
5(mess) |
3(mess)
10(mess) |
5(mess)
10(mess) |
Ash content,%,≤ |
0.005 |
0.005 |
0.005 |
|
