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HomeProduct name listMolybdic acid

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: 2025-12-17 09:50:35
Molybdic acid Structural

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)
ghs
Exclamation Mark
Irritant
GHS07
ghs
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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