1,2,4-Trimethylbenzene
CAS Number
95-63-6Synonym
Pseudocumene, Asymmetrical trimethylbenzene, psi-cumene, 1,2,4-TMB, trimethylbenzene
Occurrence/Use
Occurs naturally in coal tar and petroleum. Used as a sterilizing agent and in the manufacture of dyes, perfumes, and resins. Gasoline additive
Acute RELs
| Acute REL (μg/m3): | 2400 |
|---|---|
| Species: | Rat |
| Acute REL Toxicologic Endpoint: | Visual discrimination |
| Acute REL Target Organs: | Nervous system |
| Last Acute REL Revision: | 2023 |
| Acute Reference Exposure Levels Comments: |
OEHHA 2023. Trimethylbenzenes Reference Exposure Levels Technical Support Document.
|
8-Hour RELs
| 8-Hour Inhalation REL (μg/m3): | 8 |
|---|---|
| Last 8-Hour REL Revision: | 2023 |
| 8-Hour Reference Exposure Levels Comments: |
OEHHA 2023. Trimethylbenzenes Reference Exposure Levels Technical Support Document. |
Chronic REL
| Chronic Inhalation REL (μg/m3): | 4 |
|---|---|
| Chronic Target Organs: | Nervous system |
| Chronic Toxicologic Endpoint: | Pain sensitivity and motor function |
| Last Chronic REL Revision: | 2023 |
| Chronic Reference Exposure Levels Comments: |
OEHHA 2023. Trimethylbenzenes Reference Exposure Levels Technical Support Document. |