HuagongsheHuagongshe Chemistry Print Report · For research reference only
Formaldehyde → Sodium Sulfate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Formaldehyde | HCID 712 | — |
| Reactant | Sucrose | HCID 5988 | — |
| Reactant | Sodium Chromate | HCID 24488 | — |
| Reactant | Sodium Bisulfate | HCID 516919 | — |
| Product | Sodium Sulfate | HCID 24436 | — |
| Product | Chromic Sulfate | HCID 24930 | — |
Reaction Steps
A process, as claimed in claim 1, wherein sodium hydrogen sulfate is added to the extractive liquor, to obtain a Ph value of 6-7, and the neutral sodium chromate solution is acidified with sodium hydrogen sulfate again; and further, sucrose or formaldehyde is added, followed by heating to above 100° C., to form chromium sulfate and sodium sulfate, which, after completion of reaction, are cooled to 21°-24 C., and separated, to obtain sodium sulfate decahydrate crystals and chromium sulfate.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05395601 |
| Source dataset | uspto-grants-1995_03 |
| ORD ID | ord-2e88d0b8d198421daea6b0da438a5745 |
| Source note | uspto-grants-1995_03 |