Naphthalene
CAS Number
91-20-3Synonym
Napthalin; Naphthene; EPA Pesticide Code: 055801
Occurrence/Use
Household fumigant (mothballs, toilet deodorant blocks), pyrotechnics; chemical precursor to phthalic anhydride, 2-naphthol, surfectants, resins, dyes, insecticide, solvents, and others; component of petroleum, coal, and tobacco smoke
| Last CHHSL revision: |
1/2005
|
|---|---|
| CHHSL Comments: |
For chemical-specific screening levels for use in assessing contaminated sites, please see HHRA Note 3 (DTSC HERO). https://www.dtsc.ca.gov/assessingrisk/humanrisk2.cfm |
| Inhalation Unit Risk (μg/cubic meter)-1: |
3.4 E-5
|
|---|---|
| Inhalation Slope Factor (mg/kg-day)-1: |
1.2 E-1
|
| Oral Slope Factor (mg/kg-day)-1: |
1.2 E-1
|
| Comments/References: |
OEHHA 2009. Air Toxics Hot Spots Program Technical Support Document for Cancer Potencies. Appendix B. Chemical-specific summaries of the information used to derive unit risk and cancer potency values. Updated 2011. |
Air
| Chronic Inhalation REL (μg/m3): |
9
|
|---|---|
| Chronic Target Organs: |
Respiratory system
|
| Human Data: |
No
|
| Last Chronic REL Revision: |
2000
|
| Chronic Reference Exposure Levels Comments: |
Proposition 65
| Cancer: |
Currently listed
|
|---|
| Listed as causing: |
Cancer
|
|---|---|
| Date of Listing: |
04/19/2002
|
| Basis for Listing: |
Authoritative Bodies-National Toxicology Program
|
| Cancer | |
| No Significant Risk Level (NSRL): |
5.8 µg/day
|
|---|---|
| Last NSRL/MADL Revision: |
2005
|
| Cancer: |
|---|
Public notices related to this chemical:
- Amendments to Text of Regulations Title 22, California Code Of Regulations Section 12705. Specific Regulatory Levels Posing No Significant Risk Section 12805. Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity
- Notice of Addition of Documents and Information to Rulemaking File, Amendment to Title 22, California Code of Regulations Section 12705, Oal Rulemaking Files 04-1110-06s, 05-0318-04sr, 05-0602-03sr, And 05-0701-01sr (Naphthalene)
- Notice of Modifications to the Risk Assessment Document for Naphthalene
- Notice of Amendments to Text of Regulations, Title 22, California Code of Regulations, Sections 12705 and 12805
- Notice of Proposed Rulemaking, Title 22, California Code of Regulations, Proposed Amendment To Section 12705 and Section 12805
- Chemical Listed Effective April 19, 2002 as Known to the State of California to Cause Cancer: Naphthalene
- Notice of Intent to List Chemical: Naphthalene
- 23 Chemicals Under Consideration for Possible Listing
- Availability of Final Data Summaries and Priorities for 33 Chemicals With Respect to Their Potential to Cause Cancer
Water
| Notification Level (μg/L): |
170
|
|---|---|
| Notification Level - Download: |