Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

440019

Sigma-Aldrich

4,4′-Oxybis(phenyl isocyanate)

96%

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
O(C6H4NCO)2
CAS Number:
4128-73-8
Molecular Weight:
252.22
MDL number:
MFCD00216648
UNSPSC Code:
12352100
PubChem Substance ID:
24867558

Assay

96%

form

solid

bp

196 °C/5 mmHg (lit.)

mp

64-68 °C (lit.)

SMILES string

O=C=Nc1ccc(Oc2ccc(cc2)N=C=O)cc1

InChI

1S/C14H8N2O3/c17-9-15-11-1-5-13(6-2-11)19-14-7-3-12(4-8-14)16-10-18/h1-8H

InChI key

KDLIYVDINLSKGR-UHFFFAOYSA-N

Pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

Signal Word

Danger

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKBR6431V
10017MI
01704HO
05303KI
01728CN

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Synthesis of novel chiral tetra-(hydrazinecarboxamide) cyclophane macrocycles.
Nour HF, et al.
Tetrahedron Letters, 54(32), 4139-4142 (2013)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service