HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2285671Generated: October 30, 2026
2,6-Naphthalenedisulfonic acid → 2,7-Naphthalenedisulfonic acid
https://huagongshe.com/reaction/2285671
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 2,6-Naphthalenedisulfonic acid | HCID 11390 | — |
| Solvent | Water | HCID 962 | — |
| Product | 2,7-Naphthalenedisulfonic acid | HCID 66707 | — |
Reaction Steps
To 520 g of the disulfonation reaction mixture obtained in Example 4 was added 180 ml of water to adjust the sulfuric acid concentration to 45% by weight. The mixture was cooled to 23° C. and the precipitated crystal was recovered by filtration to obtain 60 g of 2,7-naphthalenedisulfonic acid having a purity of 97%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04324742 |
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| Source dataset | uspto-grants-1982_04 |
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| ORD ID | ord-8273d9625dc94fbcbc5b250aff8a7a41 |
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| Source note | uspto-grants-1982_04 |
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