4-Ethylcatechol

About 4-Ethylcatechol

4-Ethylcatechol is a phenolic building block carrying the CAS registry number 1124-39-6. With the molecular formula C8H10O2, it has a molar mass of 138.16 g/mol. Systematically, it is named 4-ethylbenzene-1,2-diol. Common synonyms include 4-Ethyl-1,2-benzenediol and 4-Ethylpyrocatechol.

Keep the container tightly sealed and store it in a cool, dry area. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and API synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 100 mg, 250 mg, 1 g and 5 g packs, 4-Ethylcatechol is dispatched with a Certificate of Analysis (COA) to destinations worldwide. SDS and detailed specification sheets can be requested with your quotation. Larger quantities and custom packaging are available. Request a quote for pricing and lead time.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	4-Ethylcatechol
Catalogue No.	VQ-039835
CAS Number	1124-39-6
IUPAC name	4-ethylbenzene-1,2-diol
Molecular formula	C₈H₁₀O₂
Molecular weight	138.16 g/mol
Exact mass	138.0681
InChIKey	HFLGBNBLMBSXEM-UHFFFAOYSA-N
SMILES	CCC1=CC(=C(C=C1)O)O
PubChem CID	70761

Physical properties
Physical form	Other
LogP (XLogP3)	0.5
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	4-Ethyl-1,2-benzenediol, 4-Ethylpyrocatechol, 3,4-Dihydroxyethylbenzene, 1,2-Benzenediol, 4-ethyl-, 4-Ethyl-1,2-benzenediol #, Benzenediol, 4-ethyl-, 4-Ethylpyrocatechol, 8CI, 1,2-Benzenediol,4-ethyl-, 1-(2,5-Dimethoxy-4-iodophenyl)-2-ami, 8RU

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Ethylcatechol?

The CAS Registry Number of 4-Ethylcatechol is 1124-39-6. It is also known as 4-Ethyl-1,2-benzenediol, 4-Ethylpyrocatechol, 3,4-Dihydroxyethylbenzene.

What is the molecular formula and molecular weight of 4-Ethylcatechol?

4-Ethylcatechol has the molecular formula C8H10O2 and a molecular weight of 138.16 g/mol. Its IUPAC name is 4-ethylbenzene-1,2-diol.

Which grade and pack sizes of 4-Ethylcatechol can I order?

We supply 4-Ethylcatechol, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Ethylcatechol?

Yes. Every lot of 4-Ethylcatechol is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Ethylcatechol be shipped internationally?

Yes. 4-Ethylcatechol is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.