| FEMA | N/A |
| CAS | 7220-79-3 |
| EINECS | N/A |
| JECFA Food Flavoring | N/A |
| CoE Number | N/A |
| Organoleptic Notes |
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| Odor | N/A |
| Flavor | N/A |
| Material Notes | a compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. solutions in water or alcohol have a deep blue color. methylene blue is used as a bacteriologic stain and as an indicator. it inhibits guanylate cyclase, and has been used to treat cyanide poisoning and to lower levels of methemoglobin. |