1,3-Cyclopentanedione, 97%

About 1,3-Cyclopentanedione, 97%

1,3-Cyclopentanedione is a carbonyl building block carrying the CAS registry number 3859-41-4, specified at 97% purity. Its molecular formula is C5H6O2 and its molecular weight is 98.1 g/mol. Systematically, it is named cyclopentane-1,3-dione. Common synonyms include Cyclopentane1,3dione and 1,3-Cyclopentadione.

In its supplied form it is light yellow to yellow to brown powder or crystals. Reported physical data include a melting point of 149-151 °C. Store it at 2–8 °C, in a tightly closed container. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for organic synthesis, condensation and reductive amination, API intermediates and protein and peptide research. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer 1,3-Cyclopentanedione in 1 g, 5 g, 25 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
Condensation & reductive amination
API intermediates
Protein & peptide research

Industries

Specifications & identifiers

Chemical identifiers
Product name	1,3-Cyclopentanedione, 97%
Catalogue No.	VQ-007869
CAS Number	3859-41-4
IUPAC name	cyclopentane-1,3-dione
Molecular formula	C₅H₆O₂
Molecular weight	98.1 g/mol
Exact mass	98.0368
Purity / assay	97%
HSN code	29142990
InChIKey	LOGSONSNCYTHPS-UHFFFAOYSA-N
SMILES	C1CC(=O)CC1=O
PubChem CID	77466

Physical properties
Physical form	Crystalline
Appearance	Light yellow to yellow to brown powder or crystals
Melting point	149-151 °C
LogP (XLogP3)	-0.4
H-bond donors / acceptors	0 / 2
TPSA	34.1 Å²
Storage	2–8 °C
Synonyms	1,3-Cyclopentanedione, Cyclopentane1,3dione, 1,3-Cyclopentadione, cyclopentane-1,3-quinone, 1,3cyclopentadione, 1,3 cyclopentadione, 1,3-cyclopentandione, cyclopentan-1,3-dione, 1,3-cyclopentane dione, 1,3-Cyclopentanedione, 97%

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + 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 1,3-Cyclopentanedione, 97%?

The CAS Registry Number of 1,3-Cyclopentanedione, 97% is 3859-41-4. It is also known as 1,3-Cyclopentanedione, Cyclopentane1,3dione, 1,3-Cyclopentadione.

What is the molecular formula and molecular weight of 1,3-Cyclopentanedione, 97%?

1,3-Cyclopentanedione, 97% has the molecular formula C5H6O2 and a molecular weight of 98.1 g/mol. Its IUPAC name is cyclopentane-1,3-dione.

Which grade and pack sizes of 1,3-Cyclopentanedione, 97% can I order?

We supply 1,3-Cyclopentanedione, 97% in (97%) grade, in 1 g, 5 g, 25 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1,3-Cyclopentanedione, 97%?

Yes. Every lot of 1,3-Cyclopentanedione, 97% 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 1,3-Cyclopentanedione, 97% be shipped internationally?

Yes. 1,3-Cyclopentanedione, 97% 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.

How should 1,3-Cyclopentanedione, 97% be stored?

2–8 °C. Keep the container tightly closed and refer to the SDS for full handling guidance.