Butalbital

  • 5-Allyl-5-isobutylbarbituric acid
  • 5-Allyl-5-(2'-methyl-n-propyl) barbituric acid
  • Allylisobutylbarbiturate
  • 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(2-methylpropyl)-5-(2-propenyl)-
Formula
C11H16N2O3
Structure
Uses
Hypnotic and sedative. US DEA Schedule III material.

Registry Numbers and Inventories.
CAS
77-26-9
EC (EINECS/ELINCS)
201-017-8
RTECS
CP8750000
RTECS class
Drug; Human Data
UN (DOT)
2811
Merck
13,1500
Beilstein/Gmelin
202119
Beilstein Reference
5-24-00-02006
Canada DSL/NDSL
DSL
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C11H16N2O3
Formula mass
224.26
Melting point, °C
139
Solubility in water
1.7 g/L (25 C)
Refractive index
1.4683
pKa/pKb
7.87 (pKa)
Partition coefficient, pKow
1.80
Heat of fusion
22.8 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved respirator.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Nitrogen oxides.

Fire.
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
Harmful. Harmful if swallowed. May cause sensitization by skin contact. Target organ(s): Central nervous system.
   Ingestion
Harmful if swallowed.
   Inhalation
May be harmful if inhaled. Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of skin contact, flush with copious amounts of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
III