Molecular Formula: C₁₀H₁₆
Molar mass: 136.23 g/mol
EINECS: 227-815-6
Density: 0.834 g/cm³
Flash Point: 42.8 °C
Melting point: -74°C
Water solubility: Insoluble
Index of Refraction: 1.467
Storage temp: Flammables area
Boiling Point: 175.4 °C at 760 mmHg
Vapour Pressure: 1.54 mmHg at 25°C
Appearance: Colourless liquid with lemon odour
Product categories: Monocyclic Monoterpenes;Biochemistry;Terpenes
Structure of (S)-p-Mentha-1,8-diene (CAS NO.5989-54-8):
                                      
XLogP3-AA: 3.4
H-Bond Donor: 0
H-Bond Acceptor: 0
IUPAC Name: (4S)-1-Methyl-4-prop-1-en-2-ylcyclohexene
Canonical SMILES: CC1=CCC(CC1)C(=C)C
Isomeric SMILES: CC1=CC[C@H](CC1)C(=C)C
InChI: InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h4,10H,1,5-7H2,2-3H3/t10-/m1/s1 
InChIKey: XMGQYMWWDOXHJM-SNVBAGLBSA-N

 (S)-p-Mentha-1,8-diene (CAS NO.5989-54-8) has been used for spice.

 (S)-p-Mentha-1,8-diene (CAS NO.5989-54-8)can be derived from the single of a pepper-like peppermint or spearmint oil.

Carcinogenicity of (S)-p-Mentha-1,8-diene (CAS NO.5989-54-8) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. You can see actual entry in RTECS for complete information.

Reported in EPA TSCA Inventory.

A skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes.
 

Hazard Codes: Xi,N
Risk Statements:
 R10:Flammable. 
R38:Irritating to skin. 
R43:May cause sensitization by skin contact. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements:
S24:Avoid contact with skin. 
S37:Wear suitable gloves. 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

 (S)-p-Mentha-1,8-diene ,its cas register number is 5989-54-8. It also can be called (-)-Limonene ; (-)-Dipentene ; (S)-4-Isopropenyl-1-methylcyclohexene ; Cyclohexene, 1-methyl-4-(1-methylethenyl)-, (S)- and Limonene, L- . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first,should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, Get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water, and get medical aid immediately.
In addition, (S)-p-Mentha-1,8-diene (CAS NO.5989-54-8) could stabilize existence. It is not compatible with strong oxidizing agents, acids, strong bases, peroxides, oxygen, and you must not take it with ignition sources, excess heat and incompatible materials. And also prevent it to broken down into hazardous decomposition products: carbon dioxide, carbon monoxide.