Name:
Molybdenum(VI) oxide
Synonym:
Molybdic oxide; Molybdenum trioxide; Molybdic acid anhydride; Molybdic anhydride; Molybdenum oxide (MoO3)
CAS:
1313-27-5
Section 1 - Chemical Product
MSDS Name:Molybdenum(VI) oxide
Synonym:Molybdic oxide; Molybdenum trioxide; Molybdic acid anhydride; Molybdic anhydride; Molybdenum oxide (MoO3)
Synonym:Molybdic oxide; Molybdenum trioxide; Molybdic acid anhydride; Molybdic anhydride; Molybdenum oxide (MoO3)
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 1313-27-5 | Molybdenum trioxide | >99 | 215-204-7 |
| Hazard Symbols: XN Risk Phrases: 36/37 48/20/22 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Irritating to eyes and respiratory system. Harmful : danger of serious damage to health by prolonged exposure through inhalation and if swallowed.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. Ingestion of large amounts of molybdenum may cause appetite loss, fatigue, and diarrhea.
Inhalation:
Causes respiratory tract irritation.
Chronic:
Aerosols of water-soluble molybdenum compounds can affect the respiratory tract if inhaled. Animal data from chronic inhalation studies have shown inflammatory changes in the lungs of rats, with cellular aggregates resembling nodules, which are consistent with some of the earlier clinical reports of lung problems among exposed workers. Data from a NTP study indicate that molybdenum trioxide, a soluble compound, is a likely animal carcinogen.
Irritating to eyes and respiratory system. Harmful : danger of serious damage to health by prolonged exposure through inhalation and if swallowed.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. Ingestion of large amounts of molybdenum may cause appetite loss, fatigue, and diarrhea.
Inhalation:
Causes respiratory tract irritation.
Chronic:
Aerosols of water-soluble molybdenum compounds can affect the respiratory tract if inhaled. Animal data from chronic inhalation studies have shown inflammatory changes in the lungs of rats, with cellular aggregates resembling nodules, which are consistent with some of the earlier clinical reports of lung problems among exposed workers. Data from a NTP study indicate that molybdenum trioxide, a soluble compound, is a likely animal carcinogen.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
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. Substance is noncombustible.
Extinguishing Media:
For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible.
Extinguishing Media:
For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not breathe dust.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not breathe dust.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
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 general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 1313-27-5: United Kingdom, WEL - TWA: (listed as molybdenum soluble compound 5 mg/m3 TWA (as Mo) United Kingdom, WEL - STEL: (listed as molybdenum soluble compoun 10 mg/m3 STEL (as Mo) United States OSHA: 5 mg/m3 TWA (as Mo) (listed under Molybdenum soluble compounds).
Belgium - TWA: (listed as molybdenum soluble compounds): 5 mg/m3 (as Mo) France - VME: (listed as molybdenum soluble compounds): 5 mg/m3 V (as Mo) France - VLE: (listed as molybdenum soluble compounds): 10 mg/m3 (as Mo) Germany: (listed as molybdenum soluble compounds): 5 mg/m3 VME (a Mo) Malaysia: (listed as molybdenum soluble compounds): 5 mg/m3 TWA ( Mo) Netherlands: (listed as molybdenum soluble compounds): 5 mg/m3 MA (as Mo) Russia: (listed as molybdenum soluble compounds): 2 mg/m3 TWA (as Spain: (listed as molybdenum soluble compounds): 5 mg/m3 VLA-ED ( Mo) 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 protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 1313-27-5: United Kingdom, WEL - TWA: (listed as molybdenum soluble compound 5 mg/m3 TWA (as Mo) United Kingdom, WEL - STEL: (listed as molybdenum soluble compoun 10 mg/m3 STEL (as Mo) United States OSHA: 5 mg/m3 TWA (as Mo) (listed under Molybdenum soluble compounds).
Belgium - TWA: (listed as molybdenum soluble compounds): 5 mg/m3 (as Mo) France - VME: (listed as molybdenum soluble compounds): 5 mg/m3 V (as Mo) France - VLE: (listed as molybdenum soluble compounds): 10 mg/m3 (as Mo) Germany: (listed as molybdenum soluble compounds): 5 mg/m3 VME (a Mo) Malaysia: (listed as molybdenum soluble compounds): 5 mg/m3 TWA ( Mo) Netherlands: (listed as molybdenum soluble compounds): 5 mg/m3 MA (as Mo) Russia: (listed as molybdenum soluble compounds): 2 mg/m3 TWA (as Spain: (listed as molybdenum soluble compounds): 5 mg/m3 VLA-ED ( Mo) 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 protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Powder
Color: yellow to green
Odor: odorless
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 1155 deg C @ 760 mmHg
Freezing/Melting Point: 795 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Soluble.
Specific Gravity/Density: 4.6900 g/cm3
Molecular Formula: MoO3
Molecular Weight: 143.94
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation.
Incompatibilities with Other Materials:
Bromine pentafluoride, chlorine trifluoride, lithium, magnesium, potassium, sodium, acids.
Hazardous Decomposition Products:
Oxides of molybdenum.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation.
Incompatibilities with Other Materials:
Bromine pentafluoride, chlorine trifluoride, lithium, magnesium, potassium, sodium, acids.
Hazardous Decomposition Products:
Oxides of molybdenum.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 1313-27-5: QA4725000 LD50/LC50:
CAS# 1313-27-5: Inhalation, rat: LC50 = >5840 mg/m3/4H; Oral, rat: LD50 = 2689 mg/kg; Skin, rat: LD50 = >2 gm/kg.
Carcinogenicity:
Molybdenum trioxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 1313-27-5: QA4725000 LD50/LC50:
CAS# 1313-27-5: Inhalation, rat: LC50 = >5840 mg/m3/4H; Oral, rat: LD50 = 2689 mg/kg; Skin, rat: LD50 = >2 gm/kg.
Carcinogenicity:
Molybdenum trioxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: Not Regulated
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: NOT REGULATED
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not Regulated
Hazard Class: 6.1
UN Number:
Packing group: III
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 36/37 Irritating to eyes and respiratory system.
R 48/20/22 Harmful : danger of serious damage to
health by prolonged exposure through inhalation and if
swallowed.
Safety Phrases:
S 22 Do not breathe dust.
S 25 Avoid contact with eyes.
WGK (Water Danger/Protection)
CAS# 1313-27-5: 1
Canada
CAS# 1313-27-5 is listed on Canadas DSL List.
CAS# 1313-27-5 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1313-27-5 is listed on the TSCA inventory.
