Molybdic acid
Synonym(s):Molybdic acid about 85% MoO3
- CAS NO.：7782-91-4
- Empirical Formula: HMoO4-
- Molecular Weight: 160.95
- MDL number: MFCD00036287
- EINECS: 231-970-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-04-28 19:50:54
What is Molybdic acid?
Chemical properties
white crystals or crystalline powder
The Uses of Molybdic acid
Molybdic acid is used as a precursor in the production of ammonium molybdate tetrahydrate and molybdenum(IV) sulfide. The mixture of molybdic acid in concentrated sulfuric acid is called as Froehde reagent, which finds application in analytical chemistry for the detection of alkaloids.
The Uses of Molybdic acid
Determination of phosphates.
What are the applications of Application
Molybdic acid is Used to make the Froehde reagent for the presumptive identification of alkaloids.
Definition
Molybdic acid of commerce iseither ammonium molybdate (molybdic acid 85%)or molybdenum trioxide. The use of the term inter-changeably for these compounds has caused con-fusion. Solutions of molybdic acid are very com-plex chemically since they show a great tendencyto polymerize.
Properties of Molybdic acid
| Melting point: | 300 °C |
| Density | 3.1 g/mL at 25 °C (lit.) |
| vapor density | 6.2 (vs air) |
| storage temp. | Store at +5°C to +30°C. |
| solubility | slightly soluble in H2O; soluble in alkaline solutions |
| form | white powder |
| color | White powder |
| Specific Gravity | 3.1 |
| PH | 3.46(1 mM solution);2.94(10 mM solution);2.43(100 mM solution) |
| Odor | Odorless |
| Water Solubility | 70 g/l (20 ºC) |
| Merck | 13,6263 |
| Exposure limits | ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 1000 mg/m3 |
| CAS DataBase Reference | 7782-91-4(CAS DataBase Reference) |
| EPA Substance Registry System | Molybdate (MoO42-), dihydrogen, (T-4)- (7782-91-4) |
Safety information for Molybdic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H373:Specific target organ toxicity, repeated exposure |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for Molybdic acid
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