HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ammonium Hydroxide → Hafnium
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ammonium Hydroxide | HCID 14923 | — |
| Reactant | Hafnium chloride (HfCl4) (6CI,8CI); Hafnium chloride; Hafnium tetrachloride; Hafnium(IV) chloride; Hafnium chloride (HfCl4), (T-4)- | HCID 9927068 | — |
| Reactant | L-Ascorbic Acid | HCID 54670067 | — |
| Solvent | Water | HCID 962 | — |
| Product | Hafnium | HCID 23986 | — |
| Product | L-Ascorbic Acid | HCID 54670067 | — |
Reaction Steps
Hydrated hafnium-ammonium-ascorbate was prepared as follows: 1.6 grams of hafnium-tetrachloride and 1.86 grams of crystalline ascorbic acid were dissolved in 5 ml of water, and the pH was adjusted to 6.5 with ammonium hydroxide. Two ml portions of the resulting solution were administered orally to rats and radiographs were obtained comparable to those seen with preparations described in the previous examples. Soluble complexes of ascorbic acid and hafnium possessing similar properties were obtained using molar ratios of ascorbic acid to hafnium of from 1:1 to 4:1.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04176173 |
| Source dataset | uspto-grants-1979_11 |
| ORD ID | ord-11eeb6d0b2e44c278b2f82f270f7498e |
| Source note | uspto-grants-1979_11 |