This amber glass bottle is an antique pharmacy or laboratory container that held Chromic Acid (Chromium Trioxide). Still half full)

Identification

Based on the visible text on the worn yellow label, the bottle is labeled as:

Acid Chromic

Chromium Trioxide

The bottle itself is typical of antique medicine or chemical containers from the early 20th century.

Such bottles are often sought after by collectors of medical history or "apothecaria".

Safety Warning

Chromic acid is a highly corrosive, toxic, and carcinogenic substance. If the bottle still contains any residue (even dried crystals or dust), it should be handled with extreme care.

Do not open or inhale any contents.

Avoid skin contact, as it can cause severe burns and "chrome holes" (ulcerations).

Disposal: Do not discard this in regular trash. It is considered hazardous waste and should be taken to a professional chemical disposal facility.

Disclaimer: This information is for historical identification purposes only. If you suspect there is chemical residue, contact a local hazardous waste authority for safe handling and disposal instructions.