# Chemical burns, corrosions  degree unspecified at Mass. Eye and Ear, Inc.
> OSHA SIR `2025043495` · 4/15/2025 · BOSTON, MASSACHUSETTS
## Severity
- **1 hospitalization**
- **Body part:** Other multiple ear(s), facial locations
- **Nature of injury:** Chemical burns, corrosions  degree unspecified
## Cause
- **Event:** Exposure through intact tissue
- **Source:** Multiple chemicals and hazardous materials
- **Secondary source:** Bottles, jugs, flasks
## Employer
- **Name:** Mass. Eye and Ear, Inc.
- **Location:** 243 Charles Street, BOSTON, MASSACHUSETTS, 02114
- **NAICS:** 541715
- **Jurisdiction:** 1
## Narrative

An employee was working in a research lab with a waste bottle containing 5% thiosulfate and trace amounts of other chemicals including silver nitrate, ammonium nitrate, and residual chemicals from earlier protocol steps. The bottle burst open from the bottom and its contents spilled out through the fume hood and via the partially open stash into the lab. The employee was standing right in front of the fume hood when this occurred, exposing her face, eyes, and neck to the spill. The employee was hospitalized due to chemical burns to her eyes, lips and tongue and to monitor her airway.

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*Source: [OSHA Severe Injury Reports](https://www.osha.gov/severe-injury-reports) · MORVS · CC0 1.0*