Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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MAA(105-45-3)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
MAA
Synonyms
3-Oxobutanoic acid, methyl-
Dihydrogen tetraoxomolybdate(2-)
Methyl 3-oxobutanoate
Methyl acetylacetate
Molybdenum(VI) acid monohydrate
Molybdic acid monohydrate
CAS
105-45-3
CAS
7782-91-4
Formula
C5H8O3
Formula
H2MoO4
Molecular Weight
116.12
Molecular Weight
161.94999999999999
EINECS
203-299-8
EINECS
231-970-5
RTECS
AK5775000
RTECS Class
Primary Irritant
Merck
12,6090
Merck
12,6322
Beilstein/Gmelin
105453 (G)
Beilstein/Gmelin
506727
Beilstein Reference
4-03-00-01527
EC Index Number
607-137-00-0
EC Class
Irritant

Physical and Chemical Properties

Appearance
Colorless liquid.
Appearance
White powder
Solubility in water
Soluble
Melting Point
300
Melting Point
-39
Boiling Point
170
Vapor Pressure
0.7 (20 C)
Density
1.076 g/cm3 (20 C)
Density
3.1 g/cm3 (20 C)
pKa/pKb
10.67 (pKa)
Partition Coefficient
-.264
Heat Of Vaporization
Heat Of Combustion
-2486 kJ/mol
Usage
Solvent for cellulose ethers, component of solvent mixtures for cellulose esters, chemical intermediate for organic compounds.
Vapor Density
N/R
Vapor Density
4
Saturation Concentration
900 ppm; 1700 ppm at 20 C (calculated)
Odor threshold
.
Refractive Index
1.418 (20 C)

First Aid Measures

Ingestion
Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.
Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation
May cause respiratory tract irritation.
Inhalation
Remove from exposure to fresh air immediately.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
May cause skin irritation.
Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Eyes
May cause eye irritation.
Eyes
Flush eyes with copious amounts of water for at least 15 minutes.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion
Ingestion of large amounts may cause gastrointestinal irritation. The toxicological properties of this substance have not been fully investigated.
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
Irritants may cause swelling, redness and pain at any site, especially at mucous membranes. The mouth, nose, and eyes are susceptible to these effects.
EC Risk Phrase
R 36
EC Safety Phrase
S 26

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Personal Protection
Wear appropriate chemical protective gloves, boots and goggles.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Poison Class
4

Fire Fighting Measures

Flash Point
67
Autoignition
350
Fire Fighting
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: Use agent most appropriate to extinguish fire.
Fire Fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide.
Upper exp. limit
11
Lower exp. limit
1.3
Fire Potential
Moderate fire hazard, when exposed to heat, flame or oxidizers.

Accidental Release Measures

Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.

Stability and Reactivity

Disposal Code
1
Incompatibilities
Oxidizing agents - bases.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong bases, strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Decomposition
Irritating and toxic fumes and gases.

Transport Information

HS Code
2918 30 00
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