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Chemical Datasheet

2-HYDROXY-4-(METHYLTHIO)-BUTANOIC ACID

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 583-91-5
 none data unavailable
  • HBA
NIOSH Pocket Guide International Chem Safety Card
none none
NFPA 704
data unavailable
General Description
Light brown liquid. (USCG, 1999)

Hazards

Reactivity Alerts
none
Air & Water Reactions
No rapid reaction with air. No rapid reaction with water.
Fire Hazard
No information available.
Health Hazard
Corrosive to the eyes and moderately irritating to the skin. (USCG, 1999)
Reactivity Profile
An organosulfide, alcohol, and organic acid. Organosulfides are 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. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbent listed below.

Response Recommendations

Isolation and Evacuation
No information available.
Firefighting
Fire Extinguishing Agents: Water spray, alcohol foam, dry chemical, carbon dioxide. (USCG, 1999)
Non-Fire Response
Neutralizing Agents for Acids and Caustics: Sodium bicarbonate solution. Flush with water. (USCG, 1999)
Protective Clothing
Wear approved respirator with full face piece, chemical resistant gloves and clothing. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: Flush with plenty of water for at least 15 minutes.

SKIN: Remove contaminated clothing. Flush with plenty of water. (USCG, 1999)

Physical Properties

Chemical Formula:
  • C5H10O3S
Flash Point: 250°F (USCG, 1999)
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: 320°F (USCG, 1999)
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.21 to 1.23 (USCG, 1999)
Boiling Point: data unavailable
Molecular Weight: 150.2 (USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

No PAC information available.

Regulatory Information

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names