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4,4′-Diphenylmethane diisocyanate (CAS # 101-68-8) Featured duab
  • 4,4'-Diphenylmethane diisocyanate (CAS # 101-68-8) 1

4,4'-Diphenylmethane diisocyanate (CAS # 101-68-8)

Chemical Property:

Molecular Formula C15H10N2O2
Molar Mass 250.25 Nws
Qhov ntom 1.19
Melting Point 38-44 ° C
Boling Point 392 ° C
Flash Point 196 ° C
Dej Solubility decomposes
Solubility 2 g / l (txheej txheem)
Vapor Siab 0.066 hPa (20 ° C)
Qhov tshwm sim zoo
Specific Gravity 1.180 Nws
Xim Dawb mus Yuav luag dawb
Exposure Limit TLV-TWA 0.051 mg/m3 (0.005 ppm) (ACGIH and NIOSH); qab nthab (cua) 0.204mg / m3 (0.02 ppm) / 10 min (NIOSH thiab OSHA); IDLH 102 mg/m3 (10 ppm).
BRN 797662 ib
Kev cia khoom -20 ° C
Kev ruaj ntseg ruaj khov. Hluav taws kub. Incompatible nrog muaj zog oxidizing neeg sawv cev. Reacts hnyav nrog cawv.
rhiab heev Moisture Sensitive / Lachrymatory
Explosive txwv 0.4% (V)
Refractive Index 1.5906 (kwv yees)
Physical thiab Chemical Properties Qhov zoo yog daj ntseg daj molten khoom nrog ib tug muaj zog irritating tsw.
Kub taw tes 196 ℃
Qhov chaw khov kho 37 ℃
txheeb ze ntom ntom 1.1907
Soluble hauv acetone, benzene, kerosene, nitrobenzene.flash point: 200-218

Refractive Index: 1.5906
Siv Siv nyob rau hauv plastics thiab roj hmab industries thiab raws li ib tug nplaum

Product Detail

Khoom cim npe

Risk Codes R42/43 - Tej zaum yuav ua rau muaj kev hnov ​​​​mob los ntawm kev nqus pa thiab kev sib cuag ntawm daim tawv nqaij.
R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij.
R20 - Ua phem los ntawm kev nqus pa
R48/20 -
R40 - Cov pov thawj txwv ntawm cov nyhuv carcinogenic
Kev nyab xeeb piav qhia S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.)
S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog.
S23 - Tsis txhob ua pa.
UN IDs 2206
WGK Germany 1
RTECS NQ9350000
TSCA Yog lawm
HS Code 29291090 ib
Kev Ceeb Toom Toxic / Corrosive / Lachrymatory / Moisture Sensitive
Hazard Class 6.1
Packing Group II
Toxicity LD50 qhov ncauj hauv luav: > 5000 mg/kg LD50 dermal luav > 9000 mg/kg

 

Taw qhia

Diphenylmethane-4,4′-diisocyanate, tseem hu ua MDI. Nws yog ib qho organic compound thiab yog ib hom benzodiisocyanate compounds.

 

Zoo:

1. Cov tsos: MDI tsis muaj xim lossis lub teeb daj.

2. Solubility: MDI yog soluble hauv cov kuab tshuaj organic xws li chlorinated hydrocarbons thiab aromatic hydrocarbons.

 

Siv:

Nws yog siv los ua raw khoom rau polyurethane tebchaw. Nws tuaj yeem cuam tshuam nrog polyether lossis polyurethane polyols los ua polyurethane elastomers lossis polymers. Cov khoom siv no muaj ntau yam kev siv hauv kev tsim kho, tsheb, rooj tog zaum, thiab khau, thiab lwm yam.

 

Txoj kev:

Cov txheej txheem ntawm diphenylmethane-4,4'-diisocyanate feem ntau yog ua rau aniline nrog isocyanate kom tau aniline-raws li isocyanate, thiab tom qab ntawd mus rau diazotization cov tshuaj tiv thaiv thiab denitrification kom tau txais cov khoom lag luam.

 

Cov ntaub ntawv kev nyab xeeb:

1. Tsis txhob tiv tauj: Tsis txhob sib chwv ncaj qha rau ntawm daim tawv nqaij thiab yuav tsum muaj cov khoom tiv thaiv tus kheej tsim nyog xws li hnab looj tes, tsom iav thiab khaub ncaws tiv thaiv.

2. Qhov cua: Ua kom muaj cua zoo thaum lub sijhawm ua haujlwm.

3. Cia: Thaum khaws cia, nws yuav tsum tau muab kaw thiab cia kom deb ntawm qhov hluav taws kub, qhov chaw kub thiab qhov chaw uas muaj qhov hluav taws kub.

4. Kev pov tseg pov tseg: Cov khib nyiab yuav tsum tau kho kom zoo thiab pov tseg, thiab tsis txhob muab pov tseg raws li qhov xav tau.

Thaum tuav cov tshuaj lom neeg, lawv yuav tsum tau ua raws li nruj raws li cov txheej txheem kev khiav hauj lwm hauv chaw soj nstuam thiab cov txheej txheem kev nyab xeeb, thiab ua raws li cov cai thiab cov cai.

  • Yav dhau los:
  • Tom ntej:
    • Sau koj cov lus ntawm no thiab xa tuaj rau peb

    cov khoom muaj feem xyuam