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Send EmailAmmonium molybdate tetrahydrate, AMMONIUM MOLYBDATE, 4-HYDRATE, AMMONIUM HEPTA MOLYBDATE HYDROUS, Ammonium Tetra Molybdate Tetrahydrate, Molybdic Acid Ammonium Salt Tetrahydrate,12054-85-2
| Name | Ammonium molybdate tetrahydrate |
| Synonyms | AMMONIUM MOLYBDATE - 4 H2O AMMONIUM MOLYBDATE, 4-HYDRATE AMMONIUM MOLYBDATE TETRAHYDRATE Ammonium molybdate tetrahydrate AMMONIUM HEPTA MOLYBDATE, HYDROUS Ammonium Hepta Molybdate, Hydrous Ammonium Molybdate(Vi) Tetrahydrate AMMONIUM MOLYBDATE(VI) TETRAHYDRATE Molybdic Acid Ammonium Tetrahydrate AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE Ammonium Heptamolybdate Tetrahydrate Ammonium Tetra Molybdate Tetrahydrate Ammonium Molybdate (Para) Tetrahydrate AMMONIUM MOLYBDATE (PARA) TETRAHYDRATE Molybdate(6-),hexaammonium,tetrahydrate Molybdic Acid Ammonium Salt Tetrahydrate |
| CAS | 12054-85-2 |
| EINECS | 601-720-3 |
| InChI | InChI=1/7Mo.6H3N.10H2O.18O/h;;;;;;;6*1H3;10*1H2;;;;;;;;;;;;;;;;;;/q;;;;3*+2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/p-6/r3H2MoO4.4MoO3.6H3N.4H2O/c3*2-1(3,4)5;4*2-1(3)4;;;;;;;;;;/h3*2-3H;;;;;6*1H3;4*1H2 |
| Molecular Formula | 4MoO3.3H2MoO4.4H2O.6H3N |
| Molar Mass | 1235.85 |
| Density | 2.498 g/mL at 25 °C (lit.) |
| Melting Point | 190 °C |
| Boling Point | 190°C |
| Water Solubility | 400 g/L (20 ºC) |
| Solubility | Soluble in water, insoluble in alcohol. |
| Appearance | White crystalline powder |
| Color | White to yellow-green |
| Odor | Odorless |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 1000 mg/m3 |
| Merck | 14,533 |
| PH | 4.0-5.5 (25℃, 0.05M in H2O) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Stable. Incompatible with strong acids, strong oxidizing agents. |
| MDL | MFCD00167059 |
| Physical and Chemical Properties | Solubility: H2O: 0.05 M at 20 ℃, clear, colorless WGK Germany:1 RTECS:QA5076000 |
| Use | Used as a reagent for the determination of phosphate, nickel, germanium, selenium dioxide, arsenate and lead. Reagents for chromatography. |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S36/37 - Wear suitable protective clothing and gloves. S36 - Wear suitable protective clothing. |
| UN IDs | 3288 |
| WGK Germany | 1 |
| RTECS | QA5076000 |
| TSCA | Yes |
| HS Code | 28417000 |
colorless or light yellow-green monoclinic crystals. Ammonium molybdate composition is not fixed, there are many forms. It was mainly ammonium (NH4) M07024-4H20. Density 2. 38~2. 95. Placed in air that is weathered, and part of the loss of ammonia. Decomposition to ammonia, water and molybdenum trioxide by heating to 170 °c. Soluble in water, strong acid and strong alkali solution, insoluble in ethanol.
Preparation Method
from molybdic acid solution and ammonia crystallization after the role of the system.
Introduction
Soluble in 2.3 parts of water, insoluble in alcohol. It is easy to weather when placed in the air and decomposes into ammonia, water and molybdenum trioxide when heated to 150 ℃.
Safety
should be stored in a cool, dry warehouse. Prevent heat, moisture and impact. It is not allowed to be stored and mixed with acid articles. Transport to prevent rain, sun exposure, handling to light, to prevent packaging damage. When there is a fire, it can be rescued by water and various kinds of fire retardants.
Reference Information
| pH indicator color change ph range | 5-5.5 |
| introduction | ammonium molybdate is used as a catalyst for hydrogenation and desulfurization in petrochemical industry, and is used in metallurgical industry to produce molybdenum powder, molybdenum strip, molybdenum billet, molybdenum sheet, etc. It can also be used as a trace element fertilizer, a raw material for the manufacture of ceramic pigments, pigments and other molybdenum compounds. |
| application field | ammonium molybdate is an organometallic compound and can be used in powder metallurgy, chemical industry, petrochemical, agriculture and other fields. |
| toxicity | see molybdenum trioxide. |
| use | ammonium molybdate can be used to determine phosphate, arsenate, lead and alkaloid; The phosphorus content of soil and plants can be determined by molybdenum blue method. It can also be used to determine the activity of inorganic phosphorus and alkaline phosphatase in serum; determine the composition of silicon and phosphorus in steel; used for ceramic glaze and color layer analysis reagents. It can also be used as a catalyst in the petroleum industry and used to produce molybdenum in the metallurgical industry. |
| production method | molybdenum concentrate is oxidized and roasted to generate molybdenum trioxide. after ammonia leaching and purification, it acts with nitric acid, and then separates, dries and sieves to obtain the finished product. Its 2MoS2 7O2 → 2MoO3 4SO2 ↑ 7MoO3 6NH3 7H2O →(NH4)6 Mo7O24?4H2 |