HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sodium naphthionate → 4-Amino-1-naphthalenesulfonic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sodium naphthionate | HCID 23665720 | — |
| Solvent | Water | HCID 962 | — |
| Product | 4-Amino-1-naphthalenesulfonic acid | HCID 6790 | — |
Reaction Steps
In a large beaker, add naphthionic acid sodium salt and water and stir to complete solution, pH=9.2-9.4. Slowly add hydrochloric acid, and white precipitation occurs at pH=2.2-2.4. Stir the slurry for at least 4 hours, then filter the slurry. Use the wetcake in Stage 2.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08772545B2 |
| Source dataset | uspto-grants-2014_07 |
| ORD ID | ord-d9fd6f8899674acb8d20ae54423b0202 |
| Source note | uspto-grants-2014_07 |