Name | Hexaammonium molybdate |
Synonyms | Hexaammonium molybdate Ammonium heptamolybdate Molybdate, hexaammonium Ammonium hepta molybdate ammonium heptamolybdrate Molybdate(6-),hexaammonium MOLYBDIC ACID AMMONIUM SALT PHOSPHATE MONITOR FIRST REAGENT PHOSPHATE MONITOR SECOND REAGENT PHOSPHATE MONITOR REDUCTION REAGENT PHOSPHATE MONITOR REDUCTION SOLUTION |
CAS | 12027-67-7 |
EINECS | 234-722-4 |
InChI | InChI=1/Mo.2H3N.4H2O.4O/h;2*1H3;4*1H2;;;;/q;;;;;;;;;2*-1/p+2/rMoO4.2H3N.4H2O/c2-1(3,4)5;;;;;;/h;2*1H3;4*1H2/q-2;;;;;;/p+2 |
Molecular Formula | H24Mo3N6O12 |
Molar Mass | 588.04 |
Density | 2,498 g/cm3 |
Melting Point | 190°C |
Water Solubility | Freely soluble in water. |
Solubility | H2O: soluble |
Appearance | White to white-like powder |
Specific Gravity | 2.498 |
Color | Clear light colored |
Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 1000 mg/m3 |
Merck | 14,533 |
Storage Condition | Store at RT. |
Stability | Stable. |
MDL | MFCD00064633 |
Physical and Chemical Properties | White crystals |
Use | For the preparation of catalysts, metal molybdenum, pigments, metal surface treatment, corrosion inhibitors, trace element fertilizers |
Hazard Symbols | Xi - Irritant |
Risk Codes | R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
UN IDs | UN 3264 |
WGK Germany | - |
RTECS | QA4900000 |
TSCA | Yes |
HS Code | 28417010 |
Toxicity | mic-esc 2 mmol/L MUREAV 31,185,1975 |
Raw Materials | ammonium molybdate |
colorless or light yellow-green columnar crystals. Soluble in 2.3 water, insoluble in ethanol, acid decomposition. When heated to 90 °c, one molecule of crystal water is lost and decomposed when heated to 190 °c. The pH value of 5% aqueous solution is 5.O ~ 5.5. The relative density was 2. 498.
The pulverized industrial molybdenum trioxide, water and ammonia water were stirred and dissolved. After filtration, the insoluble matter was washed with aqueous ammonia. Ammonium sulfide solution was added to the filtrate, heated, and filtered. Upon concentration by evaporation to a relative density of 141, aqueous ammonia was added and stirring was continued until there was a strong ammonia odor. Cooling, Suction filtration, pure ammonium molybdate.
It is used as a reagent for measuring phosphate, nickel, germanium, selenium dioxide, arsenate, alkaloid, lead and the like. Reagents for chromatographic analysis. Industrial as a catalyst for the oil industry, but also Powder Metallurgy molybdenum, photography, ceramic glaze, pigment industrial raw materials.