4-(Methylamino)phenol

  • p-(Methylamino)phenol
  • N-Methyl-4-hydroxyaniline
  • p-Hydroxy-N-methylaniline
  • N-Methyl-4-aminophenol
  • 4-Hydroxy-N-methylaniline
Formula
C7H9NO
Structure
Uses
Organic synthesis.

Registry Numbers and Inventories.
CAS
150-75-4
EC (EINECS/ELINCS)
205-768-2
RTECS
SL8225000
RTECS class
Mutagen
UN (DOT)
2512
Beilstein/Gmelin
1363740
Beilstein Reference
3-13-00-01007
Swiss Giftliste 1
G-6928
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H9NO
Formula mass
123.17
Melting point, °C
87
Boiling point, °C
172 - 173 (22 torr)
Vapor pressure, mmHg
0.06
Solubility in water
Soluble
pKa/pKb
5.91 (pKb)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
No data.

Fire.
Fire fighting
Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Water spray, fog or regular foam.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Containers may explode when heated.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
   Ingestion
Nausea and vomiting may occur.
   Inhalation
Dyspnea and tachypnea may occur.
   Skin
Central cyanosis unresponsive to oxygen therapy is classic.
   Eyes
See Skin.

First aid
 
   Ingestion
Emesis: ipecac-induced vomiting is not recommended because of the potential for cns depression and seizures. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Oxygen - administer oxygen to all cyanotic or symptomatic patients. Methemoglobinemia: administer 1 to 2 mg/kg of 1% methylene blue slowly iv in symptomatic patients. Additional doses may be required. Shock and cardiac arrest - treat routinely. Adjunctive therapy - exchange transfusions and hyperbaric oxygen may be useful in severe cases.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Some methemoglobinemia producing chemicals are readily absorbed through the skin to produce adverse systemic effects. Aniline and related compounds may be rapidly absorbed by all routes. Skin contact with contaminated clothing or shoes may result in adverse systemic effects. Skin should be thoroughly washed with soap and water. Contaminated clothing and shoes should be discarded. Seek medical attention. Administer 100 percent humidified supplemental oxygen with assisted ventilation as required. Treat for methemoglobinemia and sequelae. Signs and symptoms of methemoglobinemia may be delayed. Methemoglobinemia: administer 1 to 2 mg/kg of 1% methylene blue slowly iv in symptomatic patients. Additional doses may be required.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2512
Response guide
Hazard class
6.1
Packing Group
III