Aldol

  • 3-Hydroxybutanal
  • 3-Hydroxybutyraldehyde
  • Acetaldol
Formula
CH3CH(OH)CH2CHO
Structure
Description
A clear white to yellow syrupy liquid.
Uses
Manufacture rubber vulcanizers, accelerators & age resisters, in perfumes, in ore flotation, medication: prc: former hypnotic & sedative agent.

Registry Numbers and Inventories.
CAS
107-89-1
EC (EINECS/ELINCS)
203-530-2
RTECS
ES3150000
RTECS class
Primary Irritant
UN (DOT)
2839
Merck
12,225
Beilstein/Gmelin
1735845
Beilstein Reference
4-01-00-03984
Swiss Giftliste 1
G-1778
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H8O2
Formula mass
88.11
Melting point, °C
93 - 95
Boiling point, °C
162
Vapor pressure, mmHg
0.75 (25 C)
Vapor density (air=1)
1.103
Density
1.108 g/cm3 (20 C)
Solubility in water
Soluble
Refractive index
1.4238 (20 C)
Partition coefficient, pKow
0.77
Heat of vaporization
46.4 kJ/mol
Heat of combustion
-2290 kJ/mol

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
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard.
Stability
No data.
Incompatibilities
Flammable and/or toxic gases are generated by the combination with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents Can react with air to give first peroxo acids, and ultimately carboxylic acids Flammable and/or toxic gases are generated by combination with with alkali metals, nitrides, and strong reducing agents Reacts with oxoacids and carboxylic acids to form esters plus water Incompatible with oxidizing agents.

Fire.
Flash Point,°C
59
Fire fighting
Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Fire potential
May burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. May polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
2
 
 
Reactivity
1
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   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
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2839
Response guide
Hazard class
6.1
Packing Group
II
 
20. Alcohols. Glycols
Std. Transport #
4921307