Substance profile

4-CPA (ISO)

4-CPA (ISO) is prisms or needles from water.

CAS 122-88-3 C8H7ClO3 186.59 g/mol Warning

01 · Identification

What 4-CPA (ISO) is

4-CPA (ISO) is prisms or needles from water. Its molecular formula is C8H7ClO3 and its molecular weight is 186.59 g/mol. It melts at 157 °C.

Under the GHS it carries the signal word Warning.

CAS number122-88-3

EC number204-581-3

Index number607-073-00-3

Molecular formulaC8H7ClO3

Molecular weight186.59 g/mol

Other names for 4-CPA (ISO)

4-chlorophenoxyacetic acid

02 · GHS classification

Hazards and label elements

Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.

Exclamation mark

Signal wordWarning

Hazard statements assigned to 4-CPA (ISO)
Code	Hazard statement
H302	Harmful if swallowed.

Precautionary statements: P270, P301, P312, P330

03 · Physical and chemical properties

4-CPA (ISO) properties

Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.

Property	Value	Conditions	Source
Melting point	156.5 °C (313.7 °F)		HSDB
Solubility	In water, 957 mg/L at 25 °C	at 25 °C	HSDB
Vapor pressure	0.000318 mmHg		Haz-Map
Odor threshold	Odorless		HSDB

Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.

Work with 4-CPA (ISO)

ATE mixture calculator Calculate acute toxicity estimate for a mixture containing this substance. Storage compatibility What this substance must not be stored next to. Label constructor Build a compliant GHS label with these pictograms and statements.