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.
EC Index Number
Toxic; Dangerous for the Environment
R 25 50/53
S 45 60 61
Drug; Mutagen; Reproductive Effector
Japan ENCS (MITI)
Melting point, °C
117 - 119
Boiling point, °C
Vapor pressure, mmHg
3E-5 (25 C)
Solubility in water
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Hazards and Protection.
Store in a cool, dry place. Keep containers tightly closed. Storage under a nitrogen blanket has been recommended.
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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.
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.
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stable under normal temperatures and pressures.
Strong oxidizing agents - strong acids.
Nitrogen oxides, carbon monoxide, carbon dioxide.
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.
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Contact with metals may evolve flammable hydrogen gas.
Fire may produce irritating, corrosive and/or toxic gases.
Harmful if swallowed. The toxicological properties of this substance have not been fully investigated.
The toxicological properties of this substance have not been fully investigated.
No information regarding skin irritation and other potential effects was found.
No information regarding eye irritation and other potential effects was found.
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.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
I; II; III
2933 99 90