 Home > Pharmaceutical Intermediates > Bulk Drug Intermediates > Cyclopentanone for Sale > Cyclopentanone120-92-3C5H8O

Cyclopentanone120-92-3C5H8O buy - large image1

Cyclopentanone120-92-3C5H8O buy - image1

Cyclopentanone120-92-3C5H8O buy - image2

Cyclopentanone120-92-3C5H8O buy - image3

Cyclopentanone120-92-3C5H8O buy - image4

Cyclopentanone120-92-3C5H8O

5 Inquiries

Unit Price:

$33-34/MT FOB

Get Latest Price 

CAS No.:

120-92-3

Grade:

Pharmaceutical Grade

Content:

99.5%

Port:

上海

Brand:

OORENT

Packaging:

Vial/Bottle/Bag/Carton

Price valid (until):

2026-07-17

Contact Supplier

 Chat Now

Qingdao Orient Chemical Co.,LTD

Company Type:

Trader

Location:

China

Qualification:

Main Products:

pharmaceutical intermediates,peptides,electronic chemicals

 Visit Store

Product Description
Seller Information
Inquiry History

Description

Product Detail

Cyclopentanone Basic information

Physical and Chemical Properties The main purpose Chemical Properties Production method Category Toxicity grading Acute toxicity Data irritation Flammability and hazard characteristics Storage characteristics Extinguishing agent

Product Name:	Cyclopentanone
Synonyms:	Adipinketon;Dumasin;Pyran-2,4(3H)-dione, 3-acetyl-6-methyl-;ADIPIC KETONE;AKOS BBS-00004293;KETOCYCLOPENTANE;KETOPENTAMETHYLENE;CYCLOPENTANONE
CAS:	120-92-3
MF:	C5H8O
MW:	84.12
EINECS:	204-435-9
Product Categories:	Pharmaceutical Intermediates;Organics;Alpha Sort;C;Volatiles/ Semivolatiles;C3 to C6;Alphabetical Listings;C-D;Flavors and Fragrances;Carbonyl Compounds;Ketones;120-92-3;K00001;A
Mol File:	120-92-3.mol

Cyclopentanone Chemical Properties

Melting point	-51 °C (lit.)
Boiling point	130-131 °C (lit.)
density	0.951 g/mL at 25 °C (lit.)
vapor density	2.97 (vs air)
vapor pressure	11.5 hPa (20 °C)
refractive index	n20/D 1.437(lit.)
FEMA	3910 \| CYCLOPENTANONE
Fp	87 °F
storage temp.	Store below +30°C.
solubility	9.18g/l slightly soluble
form	Liquid
color	Clear colorless to slightly yellow
Odor	Pleasant
Odor Type	minty
biological source	synthetic
explosive limit	1.6-10.8%(V)
Water Solubility	PRACTICALLY INSOLUBLE
Merck	14,2743
JECFA Number	1101
BRN	605573
Henry's Law Constant	1.2×10⁰ mol/(m³Pa) at 25℃, Brockbank (2013)
Dielectric constant	16.0（-49℃）
Stability:	Stable. Incompatible with strong reducing agents, strong oxidizing agents, strong bases.
Major Application	flavors and fragrances
Cosmetics Ingredients Functions	PERFUMING
InChI	1S/C5H8O/c6-5-3-1-2-4-5/h1-4H2
InChIKey	BGTOWKSIORTVQH-UHFFFAOYSA-N
SMILES	O=C1CCCC1
LogP	0.7 at 25℃
Surface tension	33.78mN/m at 298.15K
CAS DataBase Reference	120-92-3(CAS DataBase Reference)
NIST Chemistry Reference	Cyclopentanone(120-92-3)
EPA Substance Registry System	Cyclopentanone (120-92-3)

Safety Information

Hazard Codes	Xi
Risk Statements	10-36/38
Safety Statements	23
RIDADR	UN 2245
WGK Germany	1
RTECS	GY4725000
Autoignition Temperature	445 °C
TSCA	TSCA listed
HS Code	2914 29 00
HazardClass	3
PackingGroup	III
Storage Class	3 - Flammable liquids
Hazard Classifications	Eye Irrit. 2 Flam. Liq. 3 Skin Irrit. 2
Hazardous Substances Data	120-92-3(Hazardous Substances Data)

MSDS Information

Provider	Language
SigmaAldrich	English
ACROS	English
ALFA	English

Cyclopentanone Usage And Synthesis

Physical and Chemical Properties	Cyclopentanone is also known Adipic Ketono. It is transparent colorless oily liquid. It has smell of special ether and also slightly mint-smell. It has a relative molecular mass being 84.12. It also has a relative density being 0.9487, melting point being-51.3 ℃, boiling point being 130.6 ℃, 23~24 ℃ (1.333 X 103Pa), the refractive index being 1.4366, and the flash point being 30 ℃. It is insoluble in water, soluble in alcohol, ether and acetone. It is narcotic at high concentrations. It can be obtained through oxidation of cyclopentanol. It can also be obtained through the heating of Adipic acid in the presence of Barium hydroxide. Cyclopentanone is also easily subject to polymerization especially in the presence of an acid. In the case of heating, it can participate in the following dehydration reactions, respectively producing 2-cyclopentylene cyclopentanone and 2'-cyclopentylene-2-cyclopentylene cyclopentanone: Hydrogenation can produce double-cyclopentanol with further dehydration producing 2, 2-tetramethylene cyclopentanone. Cyclopentanone is mainly used for the manufacturing of drugs, biological agents, pesticides and rubber additives. Aldehydes, ketones can react with diazoalkane and have the nitrogen atoms lost, generating two carbonyl compounds and epoxy compounds. When the aldehydes, ketones molecules contain electron-withdrawing groups, the reactivity is increased will boost the generation of the epoxy compound. The ketone molecule, with the increase of the hydrocarbon group, also mainly generates epoxy compound. Cyclic ketones, instead, will have ring expansion reactions. The bigger the hydrocarbyl group of the diazoalkane is, the more carbonyl compounds can be obtained. The order of the ketone reactivity is consistent with its nucleophilic substitution order: Cl3CCOCH3> ClCH2COCH3> CH3COCH3> CH3COC6H5> cyclohexanone> cyclopentanone> cycloheptanone> cyclooctanone.
The main purpose	1, Take the n-valeraldehyde and cyclopentanone as raw material, and first go through aldol condensation reaction and further dehydration reaction to obtain pentylene cyclopentanone, then followed by selective catalytic hydrogenation to obtain pentyl cyclopentanone. Pentyl cyclopentanone has strong floral and fruity aroma as well as nuances of jasmine. It can be used in the formulation of daily chemical flavor with the usage amount being less than 20%. IFRA has no restrictions. 2, Take n-hexanal and cyclopentanone as the raw material, first have condensation, and then perform selective hydrogenation reaction to obtain hexyl cyclopentanone. Hexyl cyclopentanone has strong jasmine smell accompanied by fruit nuances and can be used in perfume fragrance as well as the formulation of other kinds of fragrance with the usage amount being less than 5%. IFRA has no restrictions. 3, Take the 1-pentene or 1-heptene obtained by the cracking of paraffin or dehydration of the corresponding alcohol as the raw material, in the presence of t-butyl peroxide as the initiator, have addition reaction of the free radical group with cyclopentanone, generating 2-pentyl cyclopentanone (or 2-heptyl-cyclopentanone) with oxidation and ring expansion reaction to become δ-lactone (or δ-Dodecalactone). 4 Synthesis route with cyclopentanone being the starting material is of the greatest industrial production value. Cyclopentanone is first had aldol condensation reaction with n-valeraldehyde with the dehydration products further undergoing condensation and the selective hydrogenation to generate 2-pentyl cyclopentanone. It finally undergoes oxidation and ring expansion to become δ-decalactone. 5, δ-decalactone is mainly used in the formulation of edible food flavor. It is considered with the characteristic flavor of the natural cream. Before its emergence, perfumers had long been limited to application of monomer spices such as butanedione and vanillin monomers to be as the major raw material for the deployment of butter flavor. But it is generally recognized that the formulated butter flavor is worse than natural products in the respects of both taste or flavor respects. Only after the use of δ-decalactone can it have realistic cream flavor, especially in the case of using δ-Dodecalactone and δ-decalactone in combination for being as the main flavor raw material which can further improve the flavor and effect of the formulated cream spice. 6, Take cyclopentanone and pentanal as raw materials, have condensation to produce 2-(1-hydroxy) pentyl cyclopentanone which is then reacted with dimethyl malonate and hydrolyzed at 160~180 ℃, go through decarboxylation, esterification to obtain methyl dihydrojasmonate. Methyl dihydrojasmonate is the edible flavor provided by the GB2760-1996 of China for temporary application. Its aroma is better than the natural methyl jasmonate. Its property is also relatively stable. The above information is edited by the chemicalbook of Dai Xiongfeng.
Chemical Properties	It is colorless, oily liquid with a pleasant mint smell. It has a melting point of-58.2 ℃, boiling point of 130.6 ℃, the relative density of 0.9509 (20 ℃), the refractive index of 1.4366 and the flash point of 29.82 ℃. It is miscible with ethanol, ethyl ether and slightly soluble in water. It is easy to undergo polymerization, especially in the case of trace amount of acid.
Production method	It can be obtained through the heating of Adipic acid in the presence of barium hydroxide. Mix the barium hydroxide and adipic acid uniformly and heat to 285-295 °C, further distill out the generated cyclopentanone at this temperature. The distilled calcium chloride is salted out for separating the cyclopentanone; add appropriate amount of alkaline solution to remove the adipic acid wash, then wash with water; dry with anhydrous calcium chloride; have distillation; collect the fraction in the 128-131 ℃ to obtain the finished product with the yield being 75-80%.
Category	Flammable liquid
Toxicity grading	poisoning
Acute toxicity	Intraperitoneal-mouse LD50: 1950 mg/kg; subcutaneous-Mouse LD50: 2600 mg/kg.
Data irritation	Skin-rabbit 500 mg Mild; Eyes-rabbit 100 mg severe.
Flammability and hazard characteristics	It is flammable in case of fire, high temperature and with burning producing irritated smoke.
Storage characteristics	Treasury: ventilation, low-temperature and dry; store it separately from oxidants and acids.
Extinguishing agent	Dry powder, dry sand, carbon dioxide, foam, 1211 fire extinguishing agent.
Chemical Properties	Cyclopentanone is a colorless liquid with a pleasant, slightly pepperminty odor. It is soluble in water and miscible with common organic solvents. Cyclopentanone has an agreeable, peppermint-like odor. It tends to polymerize in the presence of acids.
Occurrence	Reported found in roasted onion, baked potato, tomato, gruyere cheese, butter, heated chicken, boiled beef, heated pork, roasted pecan, yellow passion fruit juice.
Uses	Cyclopentanone is used as an intermediate in the synthesis of rubber adhesives, synthetic resins, pharmaceuticals and biologically active compounds. It acts as precursor for the preparation of cyclopentamine and also pentethylcyclanone, cyclopentobarbital. It is a useful laboratory reagent and is used as thinner for epoxies. It can also be used as a solvent in paint and varnish removers and for electronic applications. As a dry cleaning agent, it is used for oil extraction. It is also involved in the preparation of cyclopentanone derivatives like cyclopenylamine and cyclopentanol which find application in the perfume industry.
Preparation	Prepared by heating adipic acid (285 to 295°C) in the presence of barium hydroxide, distilling, ether extraction and then fractionation.
Definition	ChEBI: A cyclic ketone that consists of cyclopentane bearing a single oxo substituent.
Aroma threshold values	Aroma characteristics at 2.0%: musty, slightly toasted bitter almondlike nutty, solventlike with a powdery nuance.
Taste threshold values	Taste characteristics at 20 ppm: musty, toasted nutty with a slight meaty nuance.
General Description	A clear colorless liquid with a petroleum-like odor. Flash point 87°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions	Highly flammable. Insoluble in water.
Reactivity Profile	Cyclopentanone polymerizes easily, especially in the presence of acids. Can react with oxidizing materials, i.e. hydrogen peroxide.
Health Hazard	Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Safety Profile	Moderately toxic by intraperitoneal and subcutaneous routes. A skin and severe eye irritant. Dangerous fire hazard when exposed to heat or flame; can react with oxidizers. To fight fire, use alcohol foam, foam, CO2, dry chemical. Potentially explosive reaction with hydrogen peroxide + nitric acid. When heated to decomposition it emits acrid smoke and fumes. See also KETONES.
Purification Methods	Shake it with aqueous KMnO4 to remove materials absorbing around 230 to 240nm. Dry it with Linde-type 13X molecular sieves and fractionally distil it. It has also been purified by conversion to the NaHSO3 adduct which, after crystallising four times from EtOH/water (4:1), is decomposed by adding to an equal weight of Na2CO3 in hot H2O. The free cyclopentanone is steam distilled from the solution. The distillate is saturated with NaCl and extracted with *benzene which is then dried (anhydrous K2CO3) and evaporated. The residue is then distilled [Allen, et al. J Chem Soc 1909 1960]. [Beilstein 7 IV 5.]

Cyclopentanone Preparation Products And Raw materials

Raw materials

Calcium chloride-->Adipic acid-->Barium hydroxide

Preparation Products

Sebacic acid-->BENZOFURAN-5-BORONIC ACID-->Cyclopentane-1,1-diacetic acid-->Glutaric acid-->SPIRO[4.5]DECANE-7,9-DIONE-->Buspirone-->Allethrin-->1-CYCLOPENTYLIDENE-PROPAN-2-ONE-->2-Cyclopenten-1-one-->1-Bromo-1-cyclopentene-->3-(4-OXO-3,5,6,7-TETRAHYDRO-4H-CYCLOPENTA[4,5]THIENO[2,3-D]PYRIMIDIN-2-YL)PROPANOIC ACID-->1-Cyclopentenecarboxylic acid-->Bromocyclopentane-->Cyclopentane-->Pencycuron-->(4-OXO-6,7-DIHYDRO-4H,5H-CYCLOPENTA[4,5]THIENO-[2,3-D]PYRIMIDIN-3-YL)-ACETIC ACID-->Cyclopentanol-->2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBOXAMIDE-->CYCLOLEUCINOL-->Ethyl 2-oxocyclopentylacetate-->2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBONITRILE-->1,2,3,5-TETRAHYDRO-8-THIA-5,7-DIAZA-CYCLOPENTA[A]INDENE-4-ONE-->2,2-DIMETHYLCYCLOPENTANONE-->Cyclopenta[b]pyridine-->Cyclopentanethiol-->2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBOXYLIC ACID ETHYL ESTER-->2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBOXYLIC ACID METHYL ESTER-->Methyl cyclopentenolone-->1-CYANOCYCLOPENTENE-->Methyl dihydrojasmonate-->delta-Valerolactone-->5-(4-Chlorobutyl)-1-cyclohexanyl tetrazole

Shop Fluorobenzene462-06-6C6H5F-Detailed Image 2

Basic Info

Product Name:

Cyclopentanone

Other Name:

Cyclopentanone;Adipic ketone;Dumasin;Ketocyclopentane;Ketopentamethylene;Adipin keton;NSC 4122;6: PN: WO2007101224 PAGE: 36 claimed sequence;1800084-96-1

CAS No.:

120-92-3

Molecular Formula:

C5H8O

InChIKeys:

InChIKey=BGTOWKSIORTVQH-UHFFFAOYSA-N

Molecular Weight:

84.118

Exact Mass:

84.12

EC Number:

204-435-9

UNII:

220W81TN3S

ICSC Number:

0427

NSC Number:

4122

UN Number:

2245

DSSTox ID:

DTXSID3029154

Color/Form:

WATER-WHITE, MOBILE LIQUID

HScode:

2914 29 00

Categories:

Bulk Drug Intermediates

Characteristics

PSA:

17.1

XLogP3:

0.38

Appearance:

Cyclopentanone appears as a clear colorless liquid with a petroleum-like odor. Flash point 87°F. Less dense than water and insoluble in water. Vapors heavier than air.

Density:

0.94869 g/cm³ @ Temp: 20 °C

Melting Point:

-51.3 °C

Boiling Point:

130.6 °C @ Press: 760 Torr

Flash Point:

26°C

Refractive Index:

n 20/D 1.437(lit.)

Water Solubility:

H2O: 9.18g/l slightly soluble

Storage Conditions:

Flammables area

Vapor Pressure:

11.5 hPa (20 °C)

Vapor Density:

Relative vapour density (air = 1): 2.3

Toxicity:

Intraperitoneal-mouse LD50: 1950 mg/kg; subcutaneous-Mouse LD50: 2600 mg/kg.

Flammability characteristics:

It is flammable in case of fire, high temperature and with burning producing irritated smoke.

Explosive limit:

1.6-10.8%(V)

Odor:

DISTINCTIVE ETHEREAL ODOR, SOMEWHAT LIKE PEPPERMINT

OH:

2.94e-12 cm3/molecule*sec

Henrys Law Constant:

1.00e-05 atm-m3/mole

Experimental Properties:

POLYMERIZES EASILY, ESP IN PRESENCE OF ACIDS

Air and Water Reactions:

Highly flammable. Insoluble in water.

Reactive Group:

Ketones

Reactivity Alerts:

Highly Flammable

Reactivity Profile:

CYCLOPENTANONE polymerizes easily, especially in the presence of acids. Can react with oxidizing materials, i.e. hydrogen peroxide. (NTP, 1992)

Peroxide Forming Chemical:

Cyclopentanone|D*: Other compounds that may form peroxides|4 samples had 1-4 ppm peroxide; age >1 yrs|Management of time-sensitive chemicals (JCHAS)

Physical Dangers:

The vapour is heavier than air.

See More Cyclopentanone Properties 

Hazard Identification

Classification of the substance or mixture

Flammable liquids, Category 3

Skin irritation, Category 2

Eye irritation, Category 2

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H226 Flammable liquid and vapour H315 Causes skin irritation H319 Causes serious eye irritation
Prevention	P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... P264 Wash ... thoroughly after handling.
Response	P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower]. P370+P378 In case of fire: Use ... to extinguish. P302+P352 IF ON SKIN: Wash with plenty of water/... P321 Specific treatment (see ... on this label). P332+P317 If skin irritation occurs: Get medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage	P403+P235 Store in a well-ventilated place. Keep cool.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

NO open flames, NO sparks and NO smoking. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Fireproof. Separated from acids. Cool. Keep in the dark. Keep in a well-ventilated room. Store only if stabilized.

See More Cyclopentanone Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
pharmaceutical intermediates,peptides,electronic chemicals

Location:
Room 102, 1st Floor, East Office Building, No. 45 Pengwan Road, Qianwan Bonded Port Area, Qingdao Zone, China (Shandong) Pilot Free Trade Zone

Payment Terms:
100% TT in advance

Average lead Time:
10

Total Annual Revenue:
$10 million-$25 million

Total Employees:
51-100

Year of Establishment:
2024

A reliable supplier is like insurance.

We are mainly specilized in supply of pharmaceutical intermediates, electronic chemicals，food additives, and other fine chemical products.
Integrity is the foundation, quality is life. We would like to work together with you to build a greener and brighter future.

Website: orientchem.cc
Email: scarlett@orientchem.cc
WhatsApp: +86 17753254221

Inquiry History

5 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Cyclopentanone	1000 KG	Aug 27, 2024
United States	Cyclopentanone	10 MT	Aug 1, 2023
United Kingdom	cyclopentanone	50 KG	Jun 9, 2026
United States	Cyclopentanone	1 MT	Oct 7, 2024
United Kingdom	cyclopentanone	1000 MT	Jun 11, 2024

Post an enquiry for this product

More Choices Find All Products for Sale 

Product Name	Grade / Content	Price	Supplier Name	Details
Cyclopentanone (CPN) 99%	/99		Great Advance Chemical Co., Ltd.	Inquiry
cyclopentanone 95%	/	$3200-3500/MT FOB	Shandong zhishang chemical Co.,Ltd	Inquiry
CYCLOPENTANONE FOR SALE	Chemical Grade/		Nordium Chemicals	Inquiry
Cyclopentanone 99% Colorless oily liquid	Industrial Grade/99		Shandong Lingnuo chemical Co., Ltd	Inquiry
ZHISHANG Cyclopentanone 120-92-3	/99		SHANDONG LOOK CHEMICAL CO.,LTD	Inquiry