🛡️ Hazard Overview
- GHS Class: GHS09
- Signal Word: Warning
- Hazard Statements: H400
🧤 PPE Guidelines
- Gloves: Chemical‑resistant gloves suggested
- Eye Protection: Safety goggles suggested
- Respirator: Dust respirator if dust occurs
❄️ Storage
- Storage Temp: -20°C (-4°F) Keep dry
🚑 Emergency First Aid
- For inhalation, skin, eye or ingestion exposure, please refer to full SDS Section 4.
Product identifier
- Product Name: Methylnonylketone
- Catalog Number: S3762
- CAS Number: 112-12-9
- IUPAC Name: 2-Undecanone
Relevant identified uses and uses advised against
- Identified uses: For research and development use only; laboratory chemicals; manufacture of substances.
- Uses advised against: Not for pharmaceutical, household, or other unapproved uses.
Details of the supplier
- Company: Selleck Chemicals
- TollFree: +1 877 796-6397
- Tel: +1 832 582-8158
- Fax: +1 832 582-8590
Emergency telephone number
- Emergency phone #: +1 832 582-8158
2.1 GHS classification in accordance with 29 CFR 1910 (OSHA HCS):
Acute aquatic toxicity: Category 1. H400
2.2 GHS Label elements, including precautionary statements
Hazard Pictogram(s):
Signal Word:
Warning
Hazard statement(s):
H400: Very toxic to aquatic life
Precautionary statement(s):
Prevention:
P273: Avoid release to the environment.
Response:
P391: Collect spillage.
Disposal:
P501: P501 Dispose of contents/ container to an approved waste disposal plant.
2.3 Other hazards
None.
3.1 Substances
Product name: Methylnonylketone
CAS Number: 112-12-9
PubChem CID: 8163
Molecular formula: C11H22O
Molecular weight: 170.29 g/mol
IUPAC name: undecan-2-one
3.2 Mixtures
Not applicable (pure substance).
4.1 Description of first aid measures
Inhalation: Move to fresh air. Keep at rest in a position comfortable for breathing. Seek medical attention if symptoms persist.
Skin contact: Wash with plenty of soap and water. Remove contaminated clothing. Seek medical attention if irritation develops.
Eye contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention.
Ingestion: Rinse mouth. Do NOT induce vomiting unless directed by medical personnel. Seek medical attention.
4.2 Most important symptoms and effects, both acute and delayed
See Section 11 (Toxicological Information).
4.3 Indication of any immediate medical attention and special treatment needed
Treat symptomatically. Contact a poison control center or physician for severe exposure.
5.1 Extinguishing media
Suitable: Water spray, dry chemical, carbon dioxide (CO2), alcohol-resistant foam.
Unsuitable: None known.
5.2 Specific hazards arising from the substance or mixture
To fight fire, use carbon dioxide or dry chemical.
5.3 Advice for firefighters
Wear self-contained breathing apparatus (SCBA) and full protective clothing.
Fight fire from upwind. Cool containers with water spray until fire is extinguished.
Flash point: 192 °F (89 °C) (Closed cup)
6.1 Personal precautions, protective equipment and emergency procedures
Wear appropriate personal protective equipment (see Section 8).
Avoid breathing dust/vapor. Ensure adequate ventilation.
Evacuate personnel to safe areas. Keep people away from and upwind of spill.
6.2 Environmental precautions
Prevent product from entering drains, waterways, or soil.
Contain spill with inert absorbent material.
6.3 Methods and materials for containment and cleaning up
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
7.1 Precautions for safe handling
Handle in accordance with good industrial hygiene and safety practices.
Wear appropriate PPE (see Section 8). Avoid contact with skin, eyes, and clothing.
Wash hands thoroughly after handling. Do not eat, drink, or smoke in work area.
Avoid dust formation. Use only in a chemical fume hood or well-ventilated area.
7.2 Conditions for safe storage, including any incompatibilities
Store in a cool, dry, well-ventilated area. Keep container tightly closed.
Store away from incompatible materials (see Section 10).
Protect from light and moisture.
Recommended storage (industry convention for research compounds): -20°C for long-term storage; 2-8°C for short-term use and transport.
[Note: This is a general industry recommendation. Always verify exact storage conditions with the supplier Certificate of Analysis (COA).]
Store in original container. Keep upright to prevent leakage.
8.1 Exposure controls
8.1.1 Occupational exposure limits (OEL)
OSHA PEL: Not established.
ACGIH TLV: Not established.
NIOSH REL: Not established.
No occupational exposure limit values are established for this substance.
Use the lowest feasible exposure level (ALARA principle).
8.1.2 Appropriate engineering controls
Use in a well-ventilated area. Chemical fume hood recommended for powder handling.
8.2 Individual protection measures
8.2.1 Eye/face protection
Wear safety glasses with side shields.
8.2.2 Skin protection
Wear protective gloves. Recommended material: Nitrile rubber.
Wear suitable protective clothing (lab coat).
8.2.3 Respiratory protection
Respiratory protection usually not required under normal use with adequate ventilation.
Use N95 respirator for large-scale powder handling.
8.2.4 Thermal hazards
Not applicable.
9.1 Information on basic physical and chemical properties
a) Appearance: Liquid
b) Odor: Strong odor
c) Odor threshold: No data available
d) pH: No data available
e) Melting point/freezing point: 15 °C
f) Initial boiling point and boiling range: 231.5 °C
g) Flash point: 192 °F (89 °C) (Closed cup)
h) Evaporation rate: No data available
i) Flammability (solid, gas): No data available
j) Upper/lower flammability or explosive limits: No data available
k) Vapor pressure: 0.04 [mmHg]
l) Vapor density: No data available
m) Relative density: 0.8260 to 0.8263 at 20 °C/4 °C
n) Water solubility: Insoluble in water. Soluble in ethanol, ether, acetone, benzene, carbon tetrachloride, chloroform.
o) Partition coefficient: n-octanol/water: Log P (n-octanol/water): 4.1
p) Auto-ignition temperature: No data available
q) Decomposition temperature: No data available
r) Viscosity: No data available
s) Explosive properties: No data available
t) Oxidizing properties: No data available
9.2 Other information
Topological Polar Surface Area (TPSA): 17.1 Ų
Complexity: 108
10.1 Reactivity
No specific reactivity hazards identified under normal handling conditions.
10.2 Chemical stability
Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
No hazardous reactions under normal conditions.
10.4 Conditions to avoid
Avoid heat, sparks, open flames, direct sunlight, and moisture.
10.5 Incompatible materials
... Can react with oxidizing materials.
10.6 Hazardous decomposition products
Thermal decomposition may produce: Carbon monoxide (CO), Carbon dioxide (CO₂).
See also Section 5 (Fire-fighting measures) for combustion products.
11.1 Information on toxicological effects
Acute toxicity:
No acute toxicity data available.
Skin corrosion/irritation:
No data available.
Serious eye damage/eye irritation:
No data available.
Respiratory or skin sensitization:
No data available.
Germ cell mutagenicity:
No data available.
Carcinogenicity:
No data available.
Reproductive toxicity:
No data available.
Specific target organ toxicity (single exposure):
No data available.
Specific target organ toxicity (repeated exposure):
No data available.
Aspiration hazard:
No data available.
11.2 Additional information
No additional toxicological information available.
12.1 Toxicity
LC50 Anas platyrhynchos (Mallard duck, 10 days old) dietary >5620 ppm/8 days
LD50 Anas platyrhynchos (Mallard duck, 19 weeks old) oral >2250 mg/kg
LD50 Colinus virginianus (Bobwhite, 20 weeks old) oral >2250 mg/kg
LC50 Colinus virginianus (Bobwhite, 10 days old) dietary >5620 ppm/8 days
For more Ecotoxicity Values (Complete) data for 2-UNDECANONE (10 total), please visit the HSDB record page.
/AQUATIC SPECIES/ /In the Fathead minnow (Pimephales promelas) 96 hr LC50 test,/ ...affected fish lost schooling behavior, swam near tank bottom, and were hypoactive. Fish were darkly colored, had increased respiration, and lost equilibrium prior to death. Mortalities at 96 hrs: 3.87 mg/L 18/20; 5.95 mg/L, 20/20. No mortalities at lower concentrations.
2-Undecanone's production may result in its release to the environment through various waste streams; it's use as a solvent in the production of vinyl resins, nitrocellulose and synthetic rubber, a dog and cat repellent and as a fragrance additive to soaps, detergents, creams, lotions and perfume will result in its direct release to the environment. If released to air, a vapor pressure of 4.1X10-2 mm Hg at 25 °C indicates 2-undecanone will exist solely as a vapor in the atmosphere. Vapor-phase 2-undecanone will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 1.2 days. If released to soil, 2-undecanone is expected to have moderate mobility b
12.2 Persistence and degradability
No data available.
12.3 Bioaccumulative potential
Log P (n-octanol/water): 4.1
Potential for bioaccumulation exists (Log P > 3).
12.4 Mobility in soil
No data available.
12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available.
12.6 Other adverse effects
This substance is classified as hazardous to the aquatic environment.
13.1 Waste treatment methods
Waste Treatment Methods: Waste material must be disposed of in accordance with national and local regulations. Leave chemicals in original containers and do not mix with other waste. Handle uncleaned containers in the same manner as the product itself.
14.1 UN number
Not regulated as dangerous goods (research quantities typically exempt).
14.2 UN proper shipping name
Not subject to transport regulations (small quantities for research use).
14.3 Transport hazard class(es)
Not classified as dangerous goods for transport (research quantities).
14.4 Packing group
Not applicable (not regulated as dangerous goods in typical research quantities).
14.5 Environmental hazards
Marine pollutant: Yes (classified as environmentally hazardous per GHS).
14.6 Special precautions for user
Transport in original packaging. Ensure containers are tightly sealed.
For bulk or commercial quantities, consult applicable transport regulations (DOT, IATA, IMDG).
14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable.
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
US EPA / TSCA: Subject to EPA TSCA regulations
EU ECHA / REACH: Registered (REACH Active)
SARA 302 Components:
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313 Components:
This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards:
Environmental hazard
Massachusetts Right To Know Components:
This material contains components subject to the Massachusetts Right to Know Act. See Section 2 for hazard classification.
Pennsylvania Right To Know Components:
This material contains components subject to the Pennsylvania Right to Know Act. See Section 2 for hazard classification.
New Jersey Right To Know Components:
This material contains components subject to the New Jersey Right to Know Act. See Section 2 for hazard classification.
California Prop. 65 Components:
This product does not contain any chemicals known to the State of California to cause cancer, birth defects, or any other reproductive harm.
Other regulatory listings:
- The Australian Inventory of Industrial Chemicals: Chemical: 2-Undecanone
- EFSA Legal Basis: Regulation (EC) No 1831/2003 (amended)
- Status Regulation (EC): 2008/127, Reg. (EU) 2017/781, Reg. (EU) No 540/2011, Reg. (EU) No 608/2012, Reg. (EU) No 629/2014
- FIFRA Requirements: Section 4(g)(2)(A) of FIFRA calls for the Agency to determine, after submission of relevant data concerning an active ingredient, whether products containing the active ingredients are eligible for reregistration. The Agency has previously identified and required the submission of the generic (i.e.
- FDA Requirements: Methyl nonyl ketone is a food additive permitted for direct addition to food for human consumption as a synthetic flavoring substance and adjuvant in accordance with the following conditions: a) they are used in the minimum quantity required to produce their intended effect, and otherwise in accorda
15.2 Chemical safety assessment
A chemical safety assessment has not been carried out for this substance.
For research-use-only compounds, no CSA is required under REACH Annex I.
Revision Date: 2026/09/09
Further Information: The information provided is believed to be correct but is not exhaustive and should be used only as a guideline based on current knowledge. It does not represent a guarantee of the properties of the product. Selleck Chemicals Corporation and its Affiliates shall not be held liable for any damage resulting from handling or contact with the product.