| EINECS | European Inventory of Existing Commercial Chemical Substances |
|---|---|
| HSA | Hazardous Substances Act; Health Services Administration; health systems agency; hereditary siderobl... |
| HSDB | hazardous substances data bank |
| HSEES | Hazardous Substances Emergency Events Surveillance [system] |
| IV | ichthyosis vulgaris; initial visit; interventricular; intervertebral; intravaginal; intravascular; i... |