33428

Supelco

4,4′-MDI

analytical standard

Sinónimos:
4,4′-MDI, 4,4′-Diphenylmethane diisocyanate, 4,4′-Methylenebis(phenyl isocyanate), 4,4′-Methylenediphenyl diisocyanate, Bis(4-isocyanatophenyl)methane
Fórmula lineal:
CH2(C6H4NCO)2
Número de CAS:
Peso molecular:
250.25
Beilstein/REAXYS Number:
797662
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24

Quality Level

grade

analytical standard

form

neat

shelf life

limited shelf life, expiry date on the label

application(s)

HPLC: suitable
gas chromatography (GC): suitable

bp

200 °C/5 mmHg (lit.)

mp

42-45 °C (lit.)

density

1.18 g/mL at 25 °C (lit.)

Featured Industry

Environmental

format

neat

storage temp.

−20°C

SMILES string

O=C=Nc1ccc(Cc2ccc(cc2)N=C=O)cc1

InChI

1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2

InChI key

UPMLOUAZCHDJJD-UHFFFAOYSA-N

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General description

4,4′-MDI can be extensively used to make urethane elastomers and urethane coatings.

Application

4,4′-MDI may be used as an analytical standard for the determination of the analyte in wastewater and air samples, and human biological samples by various chromatographic techniques.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

pictograms

Exclamation markHealth hazard

signalword

Danger

hazcat

Acute Tox. 4 Inhalation - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation - STOT SE 3

Target Organs

Respiratory system

storage_class_code

11 - Combustible Solids

WGK Germany

WGK 1

Flash Point F

411.8 °F - closed cup

Flash Point C

211 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificado de Análisis

Certificado de origen

Liquid chromatography and mass spectrometry determination of aromatic amines in hydrolysed urine from workers exposed to thermal degradation products of polyurethane
Skarping G, et al.
Chromatographia, 39(9-10), 619-623 (1994)
Sensitive determination of airborne diisocyanates by HPLC: 4, 4?-Diphenylmethane-diisocyanate (MDI)
Schulz M and Salthammer T
Fresenius Journal of Analytical Chemistry, 362(3), 289-293 (1998)
A highly sensitive high-performance liquid chromatographic procedure for the determination of isocyanates in air
Schmidtke F and Seifert B
Fresenius Journal of Analytical Chemistry, 336(8), 647-654 (1990)
Hatada
Macromolecular Design of Polymeric Materials, 40 (1997)
Yan Zhu et al.
Journal of chromatography. A, 956(1-2), 215-220 (2002-07-11)
A method has been developed for the simultaneous determination of a range of aromatic amines using cation-exchange chromatography performed on a standard ion chromatography column using d.c. amperometric detection. The analytes separated were 2,4- and 2,6-toluenediamine (2,4- and 2,6-TDA), aniline...

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