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Aldehydes and ketones

2-Isopropyl-5-methylhexanal

Also known as 5-methyl-2-propan-2-ylhexanal, 5-Methyl-2-(propan-2-yl)hexanal

CAS 66656-67-5Formula C10H20OMolar mass 156.27 g/molEC 266-440-2
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant
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2-Isopropyl-5-methylhexanal chemical structure, C10H20O, CAS 66656-67-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
66656-67-5
Formula
C10H20O
Molar mass
156.27 g/mol
Physical form
Liquid
HS code
291219
Category
Aldehydes and ketones
Illustrative photo, a closed 1000 litre IBC tote in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 2-Isopropyl-5-methylhexanal?

Plain description, key identifiers and synonyms

2-Isopropyl-5-methylhexanal is a chemical substance with the molecular formula C10H20O and a molar mass of 156.27 g/mol. Its CAS registry number is 66656-67-5. The IUPAC name is 5-methyl-2-propan-2-ylhexanal.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-methyl-2-propan-2-ylhexanal
CAS number
66656-67-5 CAS number cross-checked
EC number
266-440-2
Molecular formula
C10H20O
InChIKey
STZPMOIAPWTLNJ-UHFFFAOYSA-N
InChI
InChI=1S/C10H20O/c1-8(2)5-6-10(7-11)9(3)4/h7-10H,5-6H2,1-4H3
SMILES (canonical and isomeric)
CC(C)CCC(C=O)C(C)C

Synonyms

  • 5-methyl-2-propan-2-ylhexanal
  • 5-Methyl-2-(propan-2-yl)hexanal

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
156.27 g/molcalc.
Exact mass
156.1514 Dacalc.
LogP (octanol/water)
2.89calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
5calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.9calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H226Flammable liquid and vapour.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
Precautionary statements (22)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2-Isopropyl-5-methylhexanal suppliers

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2-Isopropyl-5-methylhexanal price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Isopropyl-5-methylhexanal is traded under.

HS 2912.19Indicative HS code

Acyclic aldehydes without other oxygen function, other

World exports in 2024
$679M
+4.8% vs 2023, imports $743M
2019 to 2024
Top exporters
  1. Germany22.0%
  2. China21.2%
  3. United States18.5%
Top importers
  1. United States13.1%
  2. Germany9.6%
  3. Belgium8.2%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Isopropyl-5-methylhexanal is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Isopropyl-5-methylhexanal, based on the data on this page

What is 2-Isopropyl-5-methylhexanal?

2-Isopropyl-5-methylhexanal is a chemical substance with the molecular formula C10H20O and a molar mass of 156.27 g/mol. Its CAS registry number is 66656-67-5. The IUPAC name is 5-methyl-2-propan-2-ylhexanal.

What is the CAS number of 2-Isopropyl-5-methylhexanal?

The CAS registry number of 2-Isopropyl-5-methylhexanal is 66656-67-5.

What is the molecular formula and weight of 2-Isopropyl-5-methylhexanal?

The molecular formula of 2-Isopropyl-5-methylhexanal is C10H20O and its molar mass is 156.27 g/mol.

What is 2-Isopropyl-5-methylhexanal used for?

Known uses and roles of 2-Isopropyl-5-methylhexanal include building blocks in research and laboratory.

Is 2-Isopropyl-5-methylhexanal hazardous?

2-Isopropyl-5-methylhexanal carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, causes skin irritation, may cause an allergic skin reaction. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Isopropyl-5-methylhexanal?

2-Isopropyl-5-methylhexanal is usually classified under HS code 291219 (Acyclic aldehydes without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Isopropyl-5-methylhexanal?

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What is the price of 2-Isopropyl-5-methylhexanal?

Suppliers quote 2-Isopropyl-5-methylhexanal on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Isopropyl-5-methylhexanal

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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