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Citronellol

CAS No.: 106-22-9
Formula: C10H20O
Molecular Weight: 156.27
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  • Description
  • Basic Info
  • Safety Info
  • MSDS
  • Synthesis Route
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What is Citronellol

**Introduction to Citronellol** Citronellol is a naturally occurring monoterpenoid alcohol found in essential oils such as rose, geranium, and citronella. Known for its pleasant floral-citrus aroma, it is widely used in perfumery, cosmetics, and aromatherapy for its refreshing and uplifting scent. As a key ingredient in many personal care products, citronellol also exhibits mild antimicrobial and insect-repellent properties, making it valuable in formulations for soaps, lotions, and candles. Additionally, it serves as an intermediate in the synthesis of other fragrance compounds. With its versatile applications and natural origin, citronellol remains a popular choice in the fragrance and flavor industries, offering both functional and sensory benefits.

Preparation Process: Citronellol can be prepared via the hydrogenation of citronellal. In a typical procedure, citronellal is dissolved in a suitable solvent (e.g., ethanol or methanol) and subjected to catalytic hydrogenation using a metal catalyst such as Raney nickel, palladium on carbon, or platinum oxide under mild pressure (1–5 atm) and temperature (25–80°C). The reaction is monitored until complete conversion, typically requiring 2–6 hours. The catalyst is then filtered off, and the solvent is evaporated under reduced pressure to yield crude citronellol, which can be further purified by vacuum distillation. Alternative routes include reduction with sodium borohydride or enzymatic methods.

Usage Scenarios: Citronellol, a naturally occurring monoterpenoid alcohol, is widely used in the fragrance and flavor industries for its pleasant rose-like aroma. It serves as a key ingredient in perfumes, soaps, and cosmetics, providing a fresh, floral scent. In aromatherapy, citronellol is valued for its calming and insect-repellent properties. It also acts as a flavoring agent in food and beverages, imparting a mild, sweet taste. Additionally, citronellol exhibits antimicrobial and anti-inflammatory effects, making it useful in pharmaceutical and personal care products. Its derivatives are employed in organic synthesis and as intermediates in the production of other fragrance compounds.

Citronellol Basic Info
Chemical Name Citronellol
Synonyms β-Citronellol;BETA-CITRONELLOL;(S)-Citronellol;CITRONELLOL 96;DL-CITRONELLOL;3,7-DIMETHYL-6-OCTEN-1-OL;FEMA 2309;CITRONELLOL EXTRA;2,6-DIMETHYL-2-OCTEN-8-OL;3,7-DIMETHYL-OCT-6-EN-1-OL
CAS No. 106-22-9
Molecular Formula C10H20O
Molecular Weight 156.27
PSA 20.23000
LogP 2.75130
Safely Info
RTECS RH3400000
Hazard Class -
Safety Statements 26-36-24/25-61-37-24
HS Code 29052220
WGK Germany 1
Packing Group -
RIDADR -
Risk Statements 36/37/38-51/53-43-36/38
Hazard Codes Xi,N
Caution Statement P261-P264-P272-P280-P302+P352-P305+P351+P338
Hazard Declaration H315-H317-H319
Symbol GHS07
Signal Word Warning
Citronellol Price
United States: $50 - $100
China: $30 - $70
Russia: $20 - $50
Germany: $40 - $80
India: $25 - $60
Japan: $50 - $100
Brazil: $30 - $70
South Korea: $35 - $75
Philippines: $25 - $60
United Kingdom: $45 - $85
France: $40 - $80
Mexico: $30 - $70
Canada: $45 - $85
South Africa: $20 - $50
Egypt: $25 - $60
Turkey: $30 - $70
Thailand: $30 - $70
Indonesia: $25 - $60
MSDS
MSDS
Name: Citronellol 95% Material Safety Data Sheet
Synonym: Cephrol; 2,6-dimethyl-2-octen-8-o
CAS: 106-22-9
Section 1 - Chemical Product   MSDS Name:Citronellol 95% Material Safety Data Sheet
Synonym:Cephrol; 2,6-dimethyl-2-octen-8-o

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
106-22-9 Citronellol 95.0 203-375-0
Hazard Symbols: XI
Risk Phrases: 36/37/38

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
Causes severe skin irritation.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Antidote: None reported.

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Combustible liquid.
Containers may explode when heated.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 106-22-9: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: colorless
Odor: rose-like
pH: Not available.
Vapor Pressure: .02 mm Hg @25 C
Viscosity: Not available.
Boiling Point: 222 deg C
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 79 deg C ( 174.20 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: slightly soluble
Specific Gravity/Density: .8570g/cm3
Molecular Formula: C10H20O
Molecular Weight: 156.27

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, acrid smoke and fumes.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 106-22-9: RH3400000 LD50/LC50:
CAS# 106-22-9: Draize test, rabbit, skin: 100 mg/24H Severe; Oral, rat: LD50 = 3450 mg/kg; Oral, rat: LD50 = 5 gm/kg; Skin, rabbit: LD50 = 2650 mg/kg.
Carcinogenicity:
Citronellol - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 106-22-9: 1
Canada
CAS# 106-22-9 is listed on Canada's DSL List.
CAS# 106-22-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 106-22-9 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
Synthesis Route
Total31 synthetic routes
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