1,10-Phenanthroline

  • o-Phenanthroline
Formula
C12H8N2
Structure
Description
White powder.
Uses
Forms a complex compound with ferrous ions which is used under the name of Ferroin â as an indicator in oxidation reduction systems, e.g., titration of ferrous salts.

Registry Numbers and Inventories.
CAS
66-71-7
EC (EINECS/ELINCS)
200-629-2
EC Index Number
613-092-00-8
EC Class
Toxic; Dangerous for the Environment
R 25 50/53
S 45 60 61
RTECS
SF8300000
RTECS class
Drug; Mutagen; Reproductive Effector
UN (DOT)
2811
Merck
12,7356
Beilstein/Gmelin
126461
Beilstein Reference
5-23-08-00419
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H8N2
Formula mass
180.21
Melting point, °C
117 - 119
Boiling point, °C
360
Vapor pressure, mmHg
3E-5 (25 C)
Solubility in water
Slightly soluble
Partition coefficient, pKow
1.78
Heat of fusion
15.00 kJ/mol
Heat of vaporization
43.9 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep containers tightly closed. Storage under a nitrogen blanket has been recommended.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents - strong acids.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
164
Fire fighting
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Harmful if swallowed. The toxicological properties of this substance have not been fully investigated.
   Inhalation
The toxicological properties of this substance have not been fully investigated.
   Skin
No information regarding skin irritation and other potential effects was found.
   Eyes
No information regarding eye irritation and other potential effects was found.

First aid
 
   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
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2933 99 90