Methionine hydroxy analog

  • Butyric acid, 2-hydroxy-4-(methylthio)
  • Butanoic acid, 2-hydroxy-4-(methylthio)
  • 2-Hydroxy-4-(methylthio)butanoic acid
  • DL-2-Hydroxy-4-(methylmercapto)butanoic acid
  • Desmenidol
  • Alimet
Formula
CH3SCH2CH2CH(OH)COO
Structure
Description
Light brown liquid.
Uses
In poultry feed.

Registry Numbers and Inventories.
CAS
583-91-5
EC (EINECS/ELINCS)
209-523-0
RTECS
ET4731500
RTECS class
Other
Merck
12,6054
Beilstein/Gmelin
1757947
Beilstein Reference
3-03-00-00859
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C5H10O3S
Formula mass
150.2
Melting point, °C
113
Boiling point, °C
290
Vapor density (air=1)
5.19
Critical temperature
472
Critical pressure
44.3
Density
1.21-1.23 g/cm3 (20 C)
Solubility in water
Very soluble
pKa/pKb
3.67 (pKa)
Partition coefficient, pKow
-0.18

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
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Neutralizing Agents for Acids and Caustics: Sodium bicarbonate solution. Flush with water.
Stability
No data.
Incompatibilities
Incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents Reactions with these materials generate heat and in many cases hydrogen gas 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 Reacts in this way with all bases, both organic (for example, the amines) and inorganic.

Fire.
Autoignition, °C
160
Fire fighting
Fire Extinguishing Agents: Water spray, alcohol foam, dry chemical, carbon dioxide.

Health.
Exposure effects
   Ingestion
See inhalation.
   Inhalation
Corrosive to the eyes and moderately irritating to the skin.
   Skin
See inhalation.
   Eyes
See inhalation

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Flush with plenty of water.
   Eyes
Flush with plenty of water for at least 15 minutes.

Transport.
USCG CHRIS Code
HBA
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P