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(-)-CITRONELLAL

CAS No.: 5949-05-3
Formula: C10H18O
Molecular Weight: 154.25
Suppliers: All(0) China Suppliers(0) Products(1)
  • Description
  • Basic Info
  • Safety Info
  • MSDS
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What is (-)-CITRONELLAL

(S)-(-)-Citronellal is a naturally occurring monoterpene aldehyde with a fresh, citrus-like aroma, widely recognized for its applications in the fragrance and flavor industries. It is a key component in the essential oils of citronella, lemon eucalyptus, and other aromatic plants. Known for its enantiomeric purity, (S)-(-)-citronellal is prized for its ability to impart a clean, lemony scent, making it a popular ingredient in perfumes, soaps, and household cleaning products. Additionally, it serves as a versatile intermediate in the synthesis of other valuable compounds, such as menthol and citronellol. Its natural origin and pleasant fragrance also make it a preferred choice in eco-friendly insect repellents and aromatherapy formulations.

Preparation Process: (S)-(-)-Citronellal can be prepared via the following method: 1. **Starting Material**: Use (R)-(+)-citronellol as the starting compound. 2. **Oxidation**: Oxidize (R)-(+)-citronellol using pyridinium chlorochromate (PCC) or Swern oxidation (DMSO, oxalyl chloride, Et₃N) to yield (S)-(-)-citronellal. 3. **Alternative Route**: Hydroformylate (+)-β-pinene via Rh-catalyzed reaction, followed by isomerization to produce (S)-(-)-citronellal. 4. **Enzymatic Resolution**: Racemic citronellal can be resolved using lipase-catalyzed enantioselective esterification to isolate the (S)-enantiomer. 5. **Purification**: Distill the product under reduced pressure or use column chromatography for purification. Yield and enantiomeric excess depend on reaction conditions.

Usage Scenarios: (S)-(-)-Citronellal is a naturally occurring monoterpene aldehyde found in citronella oil and other essential oils. It is widely used in the fragrance industry for its fresh, citrusy, and floral aroma, often incorporated into perfumes, soaps, and cosmetics. In flavoring, it adds a lemony note to food and beverages. Additionally, it serves as a key intermediate in synthesizing menthol and other fine chemicals. Its insect-repellent properties make it valuable in mosquito-repellent formulations. (S)-(-)-Citronellal also exhibits antimicrobial and antifungal activity, contributing to its use in pharmaceuticals and natural preservatives. Its chiral nature makes it useful in asymmetric synthesis.

(-)-CITRONELLAL Basic Info
Chemical Name (-)-CITRONELLAL
Synonyms 96.0%(GC);Citrnellal;(-)-Citrnellal;CITRONELLAL(L-);(-)-CITRONELLAL;L(-)-Citronellal;(S)-(-)-CITRONELLAL;(-)-Citronellal >L(-)-Citronellal,97%;(S)-(-)-Citronellal 96%
CAS No. 5949-05-3
Molecular Formula C10H18O
Molecular Weight 154.25
PSA 17.07000
LogP 3.482 (est)
Safely Info
RTECS -
Hazard Class -
Safety Statements 26-36
HS Code 29121900
WGK Germany -
Packing Group -
RIDADR -
Risk Statements 36/37/38
Hazard Codes Xi
Caution Statement P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Declaration H315-H319-H335
Symbol GHS07
Signal Word Warning
(-)-CITRONELLAL Price
United States: $100-200
China: $80-150
Russia: $120-180
Germany: $150-250
India: $90-160
Japan: $100-200
Brazil: $80-150
South Korea: $100-180
Philippines: $70-120
United Kingdom: $150-250
France: $130-200
Mexico: $70-130
Canada: $120-200
South Africa: $80-150
Egypt: $90-160
Turkey: $100-180
Thailand: $70-130
Indonesia: $70-120
MSDS
MSDS
Name: L(-)-Citronellal 97% Material Safety Data Sheet
Synonym: 3,7-Dimethyl-6-octenal, (3S)-; (-)-beta-Citronellal; (S)-(-)-3,7-Dimethyl-6-octenal; L-Citronellal; l-Citronellal; S-(-)-Citronellal
CAS: 5949-05-3
Section 1 - Chemical Product   MSDS Name:L(-)-Citronellal 97% Material Safety Data Sheet
Synonym:3,7-Dimethyl-6-octenal, (3S)-; (-)-beta-Citronellal; (S)-(-)-3,7-Dimethyl-6-octenal; L-Citronellal; l-Citronellal; S-(-)-Citronellal

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
5949-05-3 L-(-)-Citronellal 97 227-707-9
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Not available.
Potential Health Effects
Eye:
Causes eye irritation. May cause chemical conjunctivitis and corneal damage.
Skin:
Causes skin irritation. May cause dermatitis. May cause cyanosis of the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
Aspiration may lead to pulmonary edema. Vapor or mist is irritating to the mucous membranes and upper respiratory tract. Inhalation at high concentrations may cause CNS depression and asphixiation.
Chronic:
Effects may be delayed.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
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:
Treat symptomatically and supportively.

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.
Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Containers may explode when heated.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Water may be ineffective. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Cover with sand, dry lime or soda ash and place in a closed container for disposal. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep away from heat and flame.
Storage:
Keep away from sources of ignition. 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:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 5949-05-3: Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: clear, colorless
Odor: none reported
pH: Not available.
Vapor Pressure: 0.230 mm Hg @ 20 deg C
Viscosity: Not available.
Boiling Point: 84-86 deg C @ 13 mm Hg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: 75 deg C ( 167.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: slightly soluble
Specific Gravity/Density: .850 g/cm3
Molecular Formula: C10H18O
Molecular Weight: 154.25

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Ignition sources, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Will not occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 5949-05-3 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
L-(-)-Citronellal - Not listed by ACGIH, IARC, or NTP.

Section 12 - ECOLOGICAL INFORMATION
 

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: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 5949-05-3: No information available.
Canada
CAS# 5949-05-3 is listed on Canada's DSL List.
CAS# 5949-05-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 5949-05-3 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
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