A5396812
4,4'-MDI , 98% , 101-68-8
Synonym(s):
4,4′-Methylenebis(phenyl isocyanate);4,4′-Methylenediphenyl diisocyanate;Methylenediphenylene diisocyanate;Bis(4-isocyanatophenyl)methane;4,4′-Diphenylmethane diisocyanate
CAS NO.：101-68-8
Empirical Formula: C15H10N2O2
Molecular Weight: 250.25
MDL number: MFCD00036131
EINECS: 202-966-0
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 38-44 °C |
| Boiling point: | 392 °C |
| Density | 1.19 |
| vapor pressure | 0.066 hPa (20 °C) |
| refractive index | 1.5906 (estimate) |
| Flash point: | 196 °C |
| storage temp. | -20°C |
| solubility | 2g/l (decomposition) |
| Specific Gravity | 1.180 |
| color | White to Almost white |
| explosive limit | 0.4%(V) |
| Water Solubility | decomposes |
| FreezingPoint | 37℃ |
| Sensitive | Moisture Sensitive/Lachrymatory |
| BRN | 797662 |
| Exposure limits | TLV-TWA 0.051 mg/m3 (0.005 ppm)
(ACGIH and NIOSH); ceiling (air) 0.204
mg/m3 (0.02 ppm)/10 min (NIOSH and
OSHA); IDLH 102 mg/m3 (10 ppm). |
| Dielectric constant | 10.0（Ambient） |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. Reacts violently with alcohols. |
| CAS DataBase Reference | 101-68-8(CAS DataBase Reference) |
| IARC | 3 (Vol. 19, Sup 7, 71) 1999 |
| NIST Chemistry Reference | Benzene, 1,1'-methylenebis[4-isocyanato-(101-68-8) |
| EPA Substance Registry System | 4,4'-Methylenedi(phenyl isocyanate) (101-68-8) |
Description and Uses
4,4'-Diphenylmethane-diisocyanate (MDI) is used in the manufacture of various polyurethane products - elastic and rigid foams, paints, lacquers, adhesives, binding agents, synthetics rubbers, and elastomeric fibers.
Diphenylmethane-4,4-diisocyanate is used in the preparation of polyurethane resin and Spandex fibers; bonding of rubber to rayon; diisoeyanate in the production of polyurethane lacquers, foam plastics, rubber, and glues.
Safety
| Symbol(GHS) |   GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H315-H317-H319-H332-H334-H335-H351-H373 |
| Precautionary statements | P202-P260-P280-P302+P352-P305+P351+P338-P308+P313 |
| Hazard Codes | Xn,T,C |
| Risk Statements | 42/43-36/37/38-20-48/20-40 |
| Safety Statements | 45-36/37-23 |
| RIDADR | 2206 |
| OEB | D |
| OEL | TWA: 0.05 mg/m3 (0.005 ppm), Ceiling: 0.2 mg/m3 (0.020 ppm) [10-minute] |
| WGK Germany | 1 |
| RTECS | NQ9350000 |
| Autoignition Temperature | >600 °C |
| Hazard Note | Toxic/Corrosive/Lachrymatory/Moisture Sensitive |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29291090 |
| Hazardous Substances Data | 101-68-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 9000 mg/kg |
| IDLA | 75 mg/m3 |
