1-Undecanol SDS/MSDS (Safety Data Sheet)

3.1 Substances
Product name: 1-Undecanol
CAS Number: 112-42-5
PubChem CID: 8184
Molecular formula: C11H24O
Molecular weight: 172.31 g/mol
IUPAC name: undecan-1-ol

3.2 Mixtures
Not applicable (pure substance).

4.1 Description of first aid measures
Inhalation: Fresh air, rest. Refer for medical attention.
Skin contact: Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eye contact: First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion: Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for 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
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
CAUTION: Fire involving Safety devices (UN3268) and Fire suppressant dispersing devices (UN3559) may have a delayed activation and a risk of hazardous projectiles. Extinguish the fire at a safe distance.
SMALL FIRE: Dry chemical, CO2, water spray or regular foam.
LARGE FIRE: Water spray, fog or regular foam. Do not scatter spilled material with high-pressure water streams. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.
FIRE INVOLVING TANKS: Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)
Use water spray, powder, alcohol-resistant foam, carbon dioxide.

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: 200 °F (USCG, 1999)

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
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in covered containers as far as possible.
AEROBIC: Using acclimated mixed microbial cultures, the theoretical and 5-day BOD for 1-undecanol were determined to be 16.50% and 4.5 mmol/mmol chemical, respectively(1). After 5 days at 21 °C in sewage, the theoretical BOD for 1-undecanol was 27.6%(2). 1-Undecanol had a zero order biodegradation rate of 0.125 ppm/hour and a first order biodegradation rate constant of 6.1X10-3/hour by activated sludge(3). Using this biodegradation rate constant a half-life of 4.7 days can be calculated(SRC).
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
Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent dust cloud. For Asbestos, avoid inhalation of dust. Cover spill with plastic sheet or tarp to minimize spreading. Do not clean up or dispose of, except under supervision of a specialist.
SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area.
SMALL SPILL: Pick up with sand or other non-combustible absorbent material and place into containers for later disposal.
LARGE SPILL: Dike far ahead of liquid spill for later disposal. Cover powder spill with plastic sheet or tarp to minimize spreading. Prevent entry into waterways, sewers, basements or confined areas. (ERG, 2024)
Well closed.

7.2 Conditions for safe storage, including any incompatibilities
Well closed.
Store away from incompatible materials (see Section 10).
[Note: Specific storage temperature not available in public databases. Refer to supplier Certificate of Analysis (COA) for exact storage conditions.]
Store in original container. Keep upright to prevent leakage.

9.1 Information on basic physical and chemical properties
a) Appearance: 1-undecanol appears as a water-white liquid with a mild odor. Flash point 250 °F. Slightly soluble in water. Considered a marine pollutant by DOT. Immediate steps should be taken to limit its spread to the environment. As a liquid it can easily penetrate the soil and contaminate groundwater or streams. Mildly irritating to both the eyes and skin.
b) Odor: Citrus
c) Odor threshold: No data available
d) pH: No data available
e) Melting point/freezing point: 60.6 °F (USCG, 1999)
f) Initial boiling point and boiling range: 473 °F at 760 mmHg (USCG, 1999)
g) Flash point: 200 °F (USCG, 1999)
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: 0.00297 [mmHg]
l) Vapor density: No data available
m) Relative density: 0.835 at 68 °F (USCG, 1999) - Less dense than water; will float
n) Water solubility: Soluble in ethanol; very soluble in ether
o) Partition coefficient: n-octanol/water: Log P (n-octanol/water): 4.6
p) Auto-ignition temperature: No data available
q) Decomposition temperature: No data available
r) Viscosity: 17.2 mPa.s at 20 °C
s) Explosive properties: No data available
t) Oxidizing properties: No data available

9.2 Other information
Topological Polar Surface Area (TPSA): 20.2 Ų
Complexity: 71

11.1 Information on toxicological effects
Acute toxicity:
No acute toxicity data available.
Skin corrosion/irritation:
Causes skin irritation (H315).
Serious eye damage/eye irritation:
Causes serious eye irritation (H319).
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
Signs and symptoms of exposure:
Cough.
Dry skin. Redness. Roughness. Pain.
Redness. Pain. Blurred vision.
Nausea. Vomiting. Diarrhoea.
Data source: Hazardous Substances Data Bank (HSDB) via PubChem.

12.1 Toxicity
LC50 Pimephales promelas (Fathead minnow, weight 0.12 g) 1.04 mg/L/96 hr; flow-through bioassay, water hardness 45.5 mg/L CaCO3, temp: 25 +/- 1 °C, pH 7.5, dissolved oxygen >60% of saturation
LC50 Nitocra spinipes (Harpacticoid copepod) 1.4 mg/L/96 hr (95% confidence limit: 1.1-1.8 mg/L); static /formulated product/
LC50 Alburnus alburnus (Bleak) 4.6 mg/L/96 hr (95% confidence limit: 4.2-5.1 mg/L); static /formulated product/
EC50 Tetrahymena pyriformis (Ciliate; decreased population growth) 2.3 mg/L/48 hr (95% confidence limit: 1.88-2.75 mg/L); static /formulated product/
Environmental effects from the substance have not been investigated adequately.
1-Undecanol's production and use as a food additive, synthetic flavor, and in perfumery may result in its release to the environment through various waste streams. 1-Undecanol exists naturally in citrus fruits. If released to air, a vapor pressure of 2.97X10-3 mm Hg at 25 °C indicates 1-undecanol will exist solely as a vapor in the atmosphere. Vapor-phase 1-undecanol 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 23 hours. If released to soil, 1-undecanol is expected to have no mobility based upon an estimated Koc of 8,800. Volatilization from moist soil surfaces is expected to be an important fate process based upon an estimated Henry's Law constant of 7.3X10-5 atm-cu m/mole. However, adsorption to soil is expected to atte

12.2 Persistence and degradability
No data available.

12.3 Bioaccumulative potential
Log P (n-octanol/water): 4.6
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).
DOT label: Class 9

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:
Acute (short-term) health hazard
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: 1-Undecanol
- The Australian Inventory of Industrial Chemicals: Chemical: Undecanol
- FIFRA Requirements: Residues of nonyl, decyl, and undecyl glycoside mixture with a mixture of nonyl, decyl, and undecyl oligosaccharides and related reaction products (primarily decanol and undecanol) produced as an aqueous-based liquid (50 to 65% solids) from the reaction of primary alcohols (containing 15 to 20% seco
- FDA Requirements: Undecyl alcohol 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 accordance

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: 2026/09/10
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.