HuagongsheHuagongshe Chemistry Print Report · For research reference only
Oxygen → Orthosilicic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Oxygen | HCID 977 | — |
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Silicic acid (H2SiO3), disodium salt, pentahydrate | HCID 61495 | — |
| Product | Orthosilicic acid | HCID 14942 | — |
| Product | Sodium Sulfate | HCID 24436 | — |
Reaction Steps
About 150 parts by weight of sodium metasilicate pentahydrate are slowly added to about 75 parts by weight of concentrated sulfuric acid while agitating and keeping the temperature below 100° C. The reaction takes place under ambient pressure; oxygen is evolved and the reaction is complete in 1 to 2 hours, thereby producing a white granular silicic acid compound and sodium sulfate. The mixture is washed with water, filtered to remove the salt and water, thereby recovering the silicic acid compound. The silicic acid compound is air dried at 25° to 75° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04011253 |
| Source dataset | uspto-grants-1977_03 |
| ORD ID | ord-1d25e97c74604bc9bca836414a2b2058 |
| Source note | uspto-grants-1977_03 |