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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

4,4′-Cyclohexylidenebis(2-aminophenol) | CAS 30817-90-4

A cyclohexylidene-bridged bis(aminophenol) considered for epoxy curing, combining aromatic amine and phenolic functions with application-dependent trace-contamination requirements.

CAS30817-90-4
Molecular formulaC18H22N2O2
Molecular weight298.4 g/mol

Product overview

Two ortho-aminophenol rings are joined through a shared carbon of a cyclohexane ring in this molecule. The combination supplies two primary aromatic amines and two phenolic hydroxyl groups, making functional-group identity important for resin formulation. It differs from bisphenol A in both its bridge and amine substitution. Procurement should connect assay and amine-content measurements with the intended epoxy-equivalent calculation.

Chemical identity

Chemical name
4,4′-Cyclohexylidenebis(2-aminophenol)
CAS number
30817-90-4
Molecular formula
C18H22N2O2
Molecular weight
298.4 g/mol

Application context

This bis(aminophenol) is used as an epoxy curing agent for integrated-circuit packaging. Selection for such a resin requires assessment of curing behavior, compatibility and contamination in the full formulation. The aromatic amine and phenolic groups provide the relevant reactive functionality; the final network properties depend on resin selection and cure design. For electronics-related development, buyers can request application-specific sodium, potassium, calcium or other trace-element data with suitable methods and detection limits.

Chemistry and synthetic role

The amino group is ortho to the hydroxyl on each aromatic ring. The central cyclohexylidene group links the rings without adding another amine or phenolic site.

Quality review

Aminophenol structure

Verify the ortho substitution pattern and cyclohexylidene bridge using structural data.

Reactive-group basis

Agree assay and amine-content methods appropriate for calculating curing equivalents.

Contamination and color

Define ionic or metal limits for the intended packaging resin and an appearance or color criterion suited to the formulation.

Preparing a specification

Specify exact bis(aminophenol) identity, assay, amine-content basis and impurity criteria, adding trace ions or metals required by the epoxy-packaging application.

Packaging and storage

Confirm container compatibility, closure and net weight for the selected grade and destination. Follow the actual supplier SDS and batch label for storage and transport.

Documentation

Request the batch COA, SDS and analytical methods covering the agreed purchasing specification. Confirm which supporting chromatograms and application-specific records are available from the selected manufacturer.

Procurement questions

Is it an ordinary bisphenol without amine groups?

No. It contains two primary aromatic amino groups in addition to two phenolic hydroxyls.

Does the CAS alone define an electronics grade?

Grade selection also requires agreed impurity limits, analytical methods and lot evidence.

Can final thermal properties be specified from the raw molecule alone?

They must be measured on the complete cured resin system.

Technical sources
  1. PubChem CAS identity lookupNCBI / PubChem
  2. 4,4′-Cyclohexylidenebis[2-aminophenol]Watson International