CAS# 120-72-9:
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: 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: Crystalline powder
Color: white - slight pink 
Odor: stench 
pH: 5.9 (1000g/L (20°C)) 
Vapor Pressure: 0.012mmHg @25 deg C 
Viscosity: Not available 
Boiling Point: 253 - 254 deg C @760mmHg 
Freezing/Melting Point: 51 - 53 deg C 
Autoignition Temperature: Not available 
Flash Point: 136 deg C ( 276.80 deg F) 
Explosion Limits: Lower: Not available
Explosion Limits: Upper: Not available
Decomposition Temperature: 
Solubility in water: 2.80 g/l (25°C)
Specific Gravity/Density: 1.220 
Molecular Formula: C8H7N 
Molecular Weight: 117.15 
Section 10 - Stability and Reactivity 
Chemical Stability: Stable under normal temperatures and pressures. 
Conditions to Avoid: Incompatible materials, light, exposure to air. 
Incompatibilities with Other Materials Strong oxidizing agents, iron, iron salts. 
Hazardous Decomposition Products Nitrogen oxides, carbon monoxide, carbon dioxide. 
Hazardous Polymerization Has not been reported. 
Section 11 - Toxicological Information 
RTECS#: CAS# 120-72-9: NL2450000
 
LD50/LC50: RTECS:
CAS# 120-72-9: Draize test, rabbit, eye: 750 ug/24H Severe;
Oral, rat: LD50 = 1 gm/kg;
Skin, rabbit: LD50 = 790 mg/kg;
 
Carcinogenicity: Indole - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
 
Other: The toxicological properties have not been fully investigated. 
Section 12 - Ecological Information 
Not available Section 13 - Disposal Considerations 
Dispose of in a manner consistent with federal, state, and local regulations. 
Section 14 - Transport Information 

 IATA  IMO  RID/ADR 
Shipping Name:  TOXIC SOLID, ORGANIC, N.O.S.*  TOXIC SOLID, ORGANIC, N.O.S.  TOXIC SOLID, ORGANIC, N.O.S. 
Hazard Class:  6.1  6.1  6.1 
UN Number:  2811  2811  2811 
Packing Group:  III  III  III 

Section 15 - Regulatory Information 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN 
Risk Phrases:
R 21/22 Harmful in contact with skin and if swallowed. 
R 36 Irritating to eyes. 
 
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S 36/37/39 Wear suitable protective clothing, gloves and eye/face protection. 
 
WGK (Water Danger/Protection)
CAS# 120-72-9: Not available
 
Canada
CAS# 120-72-9 is listed on Canada's DSL List
 
US Federal
TSCA
CAS# 120-72-9 is listed on the TSCA Inventory.
 
Section 16 - Other Information 
MSDS Creation Date: 7/16/1996
Revision #1 Date 7/22/2004

Revisions were made in Sections: General revision.

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