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526037

Sigma-Aldrich

Cyclopentanecarboxaldehyde

95%

Synonym(s):

Cyclopentanealdehyde, Cyclopentanecarbaldehyde, Cyclopentyl aldehyde, Cyclopentylformaldehyde, Formylcyclopentane

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About This Item

Linear Formula:
C5H9CHO
CAS Number:
872-53-7
Molecular Weight:
98.14
MDL number:
MFCD00060798
UNSPSC Code:
12352100
PubChem Substance ID:
24874526
NACRES:
NA.22

Quality Level

100

Assay

95%

contains

0.1% hydroquinone as stabilizer

refractive index

n20/D 1.4430 (lit.)

bp

140-141 °C (lit.)

density

0.919 g/mL at 25 °C (lit.)

functional group

aldehyde

storage temp.

2-8°C

SMILES string

[H]C(=O)C1CCCC1

InChI

1S/C6H10O/c7-5-6-3-1-2-4-6/h5-6H,1-4H2

InChI key

VELDYOPRLMJFIK-UHFFFAOYSA-N

Related Categories

General description

Cyclopentanecarboxaldehyde can be prepared from cyclohexene, via copper-catalyzed oxidation with persulfate. It can also be synthesized from mercuric sulfate and cyclohexene.

Application

Cyclopentanecarboxaldehyde may be used in the synthesis of:
  • D,L-trans-2-cyclopentylmethylene-1-nitroso-1-(2-hydroxycyclohexyl)hydrazine
  • ethyl 5-cyclopentyl-5-hydroxy-2-pentenoate
  • ethyl 3-cyclo entyl-3-hydroxy-2-vinylpropanoate

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H315,H319,H335,H412

Hazard Classifications

Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

82.9 °F - closed cup

Flash Point(C)

28.3 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 2 petroleums
Hazardous rank III
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

526037-10G:
526037-1G:4548173983752
526037-VAR:
526037-5G:4548173983745
526037-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT1972
SHBM3697
SHBK5603
SHBC8421V
13196BMV

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Mechanism of oxidation of the 2-hydroxycyclohexyl radical to cyclopentanecarbaldehyde by copper ions in aqueous solutions.
Masarwa M, et al.
Inorganic Chemistry, 30(8), 1849-1854 (1991)
Cyclopentanecarboxaldehyde.
Grummitt O, et al.
Organic Syntheses, 26-26 null
2-Hydroxycyclohexylhydrazines. II. 1 Reaction with Nitrous Acid.
Taguchi T, et al.
The Journal of Organic Chemistry, 29(5), 1104-1106 (1964)
The Synthesis of Some δ-Lactones of α,β,δ-Trihydroxy Acids1.
English Jr J, et al.
Journal of the American Chemical Society, 73(2), 615-618 (1951)

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