Name:
Dehydroacetic acid 98%
Synonym:
DHA, 3-Acetyl-4-hydroxy-6-methyl-2H-pyran-2-one; Acetic acid, dehydro-; Dehydracetic acid; 3-Acetyl-6-methyl-2,4-pyrandione; DHS; 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone; 4-Hexanoic acid, 2-acetyl-5-hydroxy-3-oxo-, delta-lacton
CAS:
520-26-3
Section 1 - Chemical Product
MSDS Name:Dehydroacetic acid 98%
Synonym:DHA, 3-Acetyl-4-hydroxy-6-methyl-2H-pyran-2-one; Acetic acid, dehydro-; Dehydracetic acid; 3-Acetyl-6-methyl-2,4-pyrandione; DHS; 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone; 4-Hexanoic acid, 2-acetyl-5-hydroxy-3-oxo-, delta-lacton
Synonym:DHA, 3-Acetyl-4-hydroxy-6-methyl-2H-pyran-2-one; Acetic acid, dehydro-; Dehydracetic acid; 3-Acetyl-6-methyl-2,4-pyrandione; DHS; 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone; 4-Hexanoic acid, 2-acetyl-5-hydroxy-3-oxo-, delta-lacton
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 520-26-3 | 4h-1-benzopyran-4-one,7-6-o-(6-deoxy-. | 95.0 | 208-288-1 |
| Hazard Symbols: XN Risk Phrases: 22 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Harmful if swallowed.
Potential Health Effects
Eye:
May cause severe eye irritation and possible injury.
Skin:
May cause skin irritation. May be harmful if absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.
Harmful if swallowed.
Potential Health Effects
Eye:
May cause severe eye irritation and possible injury.
Skin:
May cause skin irritation. May be harmful if absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.
Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Water or foam may cause frothing.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Water or foam may cause frothing.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 520-26-3: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 520-26-3: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystalline powder
Color: White Crystalline Powder
Odor: None reported.
pH: Not available.
Vapor Pressure: 1.9 mm Hg @ 100 C
Viscosity: Not available.
Boiling Point: 270 deg C @ 760.00mmHg
Freezing/Melting Point: 111.00 - 113.00 deg C
Autoignition Temperature: 336 deg C ( 636.80 deg F)
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Moderately Soluble.
Specific Gravity/Density:
Molecular Formula: C8H8O4
Molecular Weight: 168.15
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, reducing agents, strong oxidants, bases.
Incompatibilities with Other Materials:
Strong oxidizing agents - strong bases - strong reducing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, acrid smoke and fumes.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, reducing agents, strong oxidants, bases.
Incompatibilities with Other Materials:
Strong oxidizing agents - strong bases - strong reducing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, acrid smoke and fumes.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 520-26-3: MK6650000 LD50/LC50:
Not available.
Dermal, rabbit: LDLo = 5 gm/kg mg/kg/11D-I = 330 Carcinogenicity:
4h-1-benzopyran-4-one,7-6-o-(6-deoxy-.alpha.-l-mannopyranosy - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 520-26-3: MK6650000 LD50/LC50:
Not available.
Dermal, rabbit: LDLo = 5 gm/kg mg/kg/11D-I = 330 Carcinogenicity:
4h-1-benzopyran-4-one,7-6-o-(6-deoxy-.alpha.-l-mannopyranosy - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Other No information available.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 22 Harmful if swallowed.
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 520-26-3: No information available.
Canada
CAS# 520-26-3 is listed on Canadas DSL List.
CAS# 520-26-3 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 520-26-3 is listed on the TSCA inventory.
