Molybdic oxide
Molybdenum(VI) oxide
CAS: 1313-27-5;11098-99-0
Molecular Formula: MoO3
Molybdic oxide - Names and Identifiers
| Name | Molybdenum(VI) oxide |
| Synonyms | LT-E003 Molybdic oxide trioxomolybdenum Molybdenum oxide Molyxlic trioxide Molybdenum(Ⅵ)oxide Molybdenum(VI) oxide |
| CAS | 1313-27-5 11098-99-0 |
| EINECS | 234-321-4 |
| InChI | InChI=1/Mo.3O/rMoO3/c2-1(3)4 |
Molybdic oxide - Physico-chemical Properties
| Molecular Formula | MoO3 |
| Melting Point | 795℃ |
| Boling Point | 1155℃ |
| Water Solubility | 0.5 g/L (20℃) |
| Appearance | White or bright yellow powder |
| Storage Condition | Room Temprature |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00003469 |
| Physical and Chemical Properties | Characteristics of colorless or yellow-white powder, orthorhombic crystal system. melting point 795 ℃ boiling point 1155 ℃ relative density 4.692 The solubility is very slightly soluble in water, soluble in acid, alkali and ammonia solution. |
| Use | Used as a catalyst in the petroleum industry, also used in the preparation of metal molybdenum, enamel pigments and drugs |
Molybdic oxide - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37 - Irritating to eyes and respiratory system. |
| Safety Description | S22 - Do not breathe dust. S25 - Avoid contact with eyes. |
Molybdic oxide - Upstream Downstream Industry
| Raw Materials | ammonium molybdate |
| Downstream Products | Sodium Molybdate Sodium phosphomolybdate ammonium molybdate Ammonium Phosphomolybdate Trihydrate |
Molybdic oxide - Nature
Open Data Verified Data
white crystalline powder. d26 4.6961 melting point 795 °c; Boiling point 1155 °c. Soluble in ammonia, alkali solution, hydrofluoric acid, concentrated sulfuric acid, insoluble in water. Very stable in air, the introduction of dry hydrogen chloride, heat sublimation into pale yellow needle-like crystals. A vigorous reaction occurs with halogen compounds such as bromine pentafluoride, chlorine trifluoride. By high heat decomposition, release of toxic smoke.
Last Update：2024-01-02 23:10:35
Molybdic oxide - Use
Open Data Verified Data
for blood glucose, protein, alkaloids, arsenic, phenol detection and spectral analysis reagent.
Last Update：2022-01-01 09:04:29
Molybdic oxide - Preparation Method
Open Data Verified Data
ammonium molybdate thermal decomposition method: the molybdate concentrate is crushed to 60~80 mesh, put into the baking furnace at 500~550 ℃ oxidation roasting, leaching with ammonia, ammonium molybdate solution to remove impurities, heating to 40~45 ℃, adding nitric acid and neutralizing to pH -1.5 under stirring, generating ammonium octabolybdate precipitation, after filtration, centrifugal dehydration, dissolved in ammonia water at 70~80 ℃, after evaporation and concentration, secondary ammonium molybdate was obtained, and then thermal decomposition was carried out at 550~600 ℃ to obtain molybdenum trioxide finished product.
Last Update：2022-01-01 11:04:35
Molybdic oxide - Introduction
Insoluble in water, soluble in alkali, acid, ammonia and potassium hydrogen tartrate solution. Sublimation at higher temperatures. Very slightly soluble in acids after strong burning. Moderate toxicity, median lethal dose (rat, oral) 125mg/kg. It's irritating.
Last Update：2022-10-16 17:13:15
Molybdic oxide - Safety
Open Data Verified Data
rat oral LDsa:125mg/kg. Molybdenum trioxide and aluminate are toxic, metal molybdenum and molybdenum disulfide toxicity is weak. Poisoning with molybdenum causes arthritis and more than Arthralgia, hypotension, instability of blood pressure, disorders of the functioning of the nervous system, disorders of metabolic processes. The maximum allowable concentration of the aerosol of the soluble compound of aluminum is 2mg/m3. the insoluble compound of molybdenum is 6mg/m3. Workers should be protected. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Keep the container sealed. It was kept by designated person. It should be stored separately from halide, edible chemical raw materials, etc. Attention should be paid to personal protection in sub-packing and handling operations.
Last Update：2022-01-01 09:04:29
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Raw Materials for Molybdic oxide
Downstream Products for Molybdic oxide