Description:
Paraformaldehyde - formula H-[æì2Ä] nOH formaldehyde polymerization product, where n=8 - 100-colourless crystals, tpl 120 150 ° - C. Paraformaldehyde formaldehyde source.
Application:
Paraformaldehyde provides formaldehyde source at synthesis phenol - mochevino-, furfural - rezortsinol-and melamine-formaldehyde pitches. These products find broad application in the paint-and-varnish, woodworking, textile and foundry industry.
Paraformaldehyde is also used by production of chemicals for drilling of oil wells, additives to petroleum oils, sticky pitches and the formed materials of electric components.
Various final application includes chemicals for the photo and graphic art, pigments, antioxidants for rubbers, chemicals for ink and fluorescent lamps, pharmaceuticals, poorly decaying fertilizers, etc.
Paraformaldegid's use (PFA of 89-96%) by production of pitches (resorcinol-formaldehyde, phenolformaldehyde, amino-formaldehyde, melaminosoderzhashchy), and also by production of varnishes, glues allows to receive high-quality products and to refuse use of formalin, amino-formaldehyde concentrate (KFK).
Besides use of PFA provides:
- Excludes formation of waste over-resin waters and other waste of production -
- Reduces pollutions due to the lack of methanol that allows to improve ecological situation at the enterprise and to reduce payments for emissions -
- Increases equipment productivity -
- Considerably reduces consumption of steam and the electric power -
- Significantly cuts down expenses on transportation and storage of raw materials -
- Owing to lack of methanol in pitch reduces account norms of hardener in process of manufacture of chipboard -
- Raises strength indicators of chipboard, etc.
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| DESCRIPTION / GRADE |
PF89 | PF91 | PF91H | PF92 | PF93 &-93% | PF96 &-96% |
|---|---|---|---|---|---|---|
| Commercial name | Paraformal- degid 89% |
Paraformal- degid 91% |
Paraformal- degid 91% of H |
Paraformal- degid 92% |
Paraformal- degid 93% |
Paraformal- degid 96% |
| Chemical formula | H-(CH2O)n-OH, - - - n: 8 to 100 |
H-(CH2O)n-OH, - - - n: 8 to 100 |
H-(CH2O)n-OH, - - n: 10 to 30 |
H-(CH2O)n-OH, - - - n: 10 to 30 |
H-(CH2O)n-OH, - - - n: 8 to 100 / n: 10 to 40 |
H-(CH2O)n-OH, - - - n: 8 to 100 / n: 30 to 100 |
| PARAMETERS / GRADE | ||||||
| Look | White granules | White granules | White granules | White granules | White granules | White granules |
| Content of formaldehyde | 88.0 - 90.0% | 90.0 - 92.0% | 90.0 - 92.0% | 91.0 - 93.0% | 92.0 - 94.0% | 94.5 - 96.5% |
| Content of methanol | max. 1.0% | max. 0.8% | max. 0.8% | max. 0.8% | max. 0.8% | max. 0.8% |
| pH (10% aqueous solution) | 3-5 | 3-5 | 4-7 | 4-7 | 4-7 | 5-7 |
| Acidity (on formic acid) | max. 0.03% | max. 0.03% | max. 0.03% | max. 0.03% | max. 0.015% / max. 0.03% |
max. 0.03% |
| Content of metal | max. 2ppm | max. 2ppm | max. 2ppm | max. 2ppm | max. 2ppm | max. 2ppm |
| Content of ashes | max. 100ppm | max. 100ppm | max. 100ppm | max. 100ppm | max. 100ppm | max. 100ppm |
| OTHER PROPERTIES / GRADE | ||||||
| Reactivity (by means of resorcin) |
2-4 minutes | 2-4 minutes | 2-4 minutes | 2-4 minutes | 2-4 minutes | 3 - 5 minutes |
| Volume density | 750 - 850 kg/m3 | 750 - 850 kg/m3 | 750 - 850 kg/m3 | 750 - 850 kg/m3 | 750 - 850 kg/m3 | 750 - 850 kg/m3 |
| Particle size > - 1 mm 1 - 0.2 mm <-0.2 mm |
1-5% 75 - 84% 15-20% |
1-5% 75 - 84% 15-20% |
1-5% 75 - 84% 15-20% |
1-5% 75 - 84% 15-20% |
1-5% 75 - 84% 15-20% |
1-5% 75 - 84% 15-20% |
