Active Biological Water Purifying Agent Ammonia Nitrogen Cod Remover Microbial Flocculant
Basic Introduction:
MDI 99.5% methylene diphenyl diisocyanate
1.MDI (Isocyanate) introduction :
Cosmonate M-200 is polymeric MDI, generally used in manufacturing hard and semi-hard polyurethane foam. Cosmonate M-200 is liquefied in normal temperature and easily handled and stored down to -20ºC. It is solvent-free form with 2.7 average organic function and maximum of 125 cps (25ºC) viscosity which is mixed with monomer MDI of 4,4-diphenylmethane diisocyante and its oligomer above dimer, trimer and tetramer.
Cas No.:101-68-8
Purity:99%
Molecular Weight: 250.25
Molecular Formula : C15H10N2O2
Density :1.19
Melting point : 38-44 ºC
Boiling point : 392 ºC
Flash point : 196 ºC
Water solubility : decomposes
Technical Specification of MDI 200:
| Polymeric MDI (Polymethane Polyphenyl Isocyanate) |
| ITEST ITEM | UNIT | SPEC | RESULT |
| Appearance | | brown liquid | brown liquid |
| Viscosity | mPa.s@25°C | 175-250 | 226 |
| NCO content | %(CO) | 30-32 | 30.8 |
| EHC | Mg/kg | MAX.250 | 89 |
| Density | (25°C,g/cm3) | 1.22-1.25 | - |
| Acid Content | (HCL) % | ≤0.05 | - |
| Hydrolyzable Chlorine | % | ≤0.2 | - |
MDI PM 200 Spec.
| Appearance | brown color liquid |
| NCO(%Wt) | 30.2~32.0 |
| Density g/cm3: | 1.220~1.250 |
| PH value(%, HCL): | ≤ 0.05 |
| H.C content | 0.2% max |
| Acid content | 0.1% max |
TDI 80/20 Spec.
| Test Item | Index | Test Result |
| Purity(WT)% | 99.7min | 99.8 |
| 2,4-Isomer% | 80+/-1 | 79.6 |
| 2,6-Isomer% | 20+/-1 | 19.6 |
| Acidity%(HCL) | 0.0015MAX | 0.0004 |
| Hydrolyzable Chloride(WT)% | 0.004MAX | 0.0033 |
| Color (APHA) | 15 MAX | 5 |
| Total Chloride(WT)% | 0.018 MAX | 0.005 |
Advantages of Polyol Isocyanate Mdi :
it reacts with isocyanate to produce foam which has excellent performances, which are as follows,
1) fine and uniformity cells
2) low thermal conductivity
3) perfect flame resistance
4) good low temperature dimensional stability.
It applies to all kinds of thermal insulation engineering which uses the spray technology, such as cold rooms, pots, large-scale pipelines and construction metope etc.
Application Of MDI 200
Isocyanates MDI is extensively application in most of field, such as thermal insulation rigid foam, PU coating, PU adhesive,
Seepage-proofing, structure foam, Automobile bumper, high resilience etc.
