PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diethyl phthalate; (Ethyl phthalate) | 84-66-2 | 8027 |
15.01
4.01
11.01
7.01
8.00
11.00
4.09
4.06
4.07
3.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| C12H14O4 | DIETHYL PHTHALATE, 1,2-BENZENEDICARBOXYLIC ACID, DIETHYL ESTER, ANOZOL, DEP, DIETHYL 1,2-BENZENEDICARBOXYLATE, DIETHYL ESTER OF PHTHALIC ACID, DIETHYL-O-PHTHALATE, ESTOL 1550, ETHYL PHTHALATE, NCI-C60048, NEANTINE, O-BENZENEDICARBOXYLIC ACID DIETHYL ESTER, O-BIS(ETHOXYCARBONYL)BENZENE, PALATINOL A, PHTHALIC ACID, DIETHYL ESTER, PHTHALOL, PLACIDOL E, RCRA WASTE NUMBER U088, SOLVANOL, UNIMOLL DA | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 222.24 | L | -40.5 | 295 | 12 | 1.232 @ 14°C | 7000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.7 | 31 | 190 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 15 | 280 | 1700 |
Technical Basis
A review of available toxicity data was able to identify toxicity and exposure limit data for this chemical. A rat, oral LD50 was selected as the TEEL-3 basis. TEEL-2 values were calculated from this TEEL-3, in accordance with guidelines in the handbook (Table 3.5.) The TLV-TWA exposure limit was selected as the TEEL-1 basis (Table 3.5.)
TEEL-1 = TLV-TWA x 3
TEEL-2 = TEEL-3/6
TEEL-3 = Rat oral LD50 (8600 mg/kg)
This review generated a TEEL-1 that is consistent with Rev. 29A. The recommended TEEL-3 and TEEL-2 values that are slightly more conservative. In Rev. 29A, the TEEL-3 basis was reported as a rat oral LD50 value, which was not found during research, therefore the rat oral LD50 is a lower starting value is the current starting point.
TEEL-1 = TLV-TWA x 3
TEEL-2 = TEEL-3/6
TEEL-3 = Rat oral LD50 (8600 mg/kg)
This review generated a TEEL-1 that is consistent with Rev. 29A. The recommended TEEL-3 and TEEL-2 values that are slightly more conservative. In Rev. 29A, the TEEL-3 basis was reported as a rat oral LD50 value, which was not found during research, therefore the rat oral LD50 is a lower starting value is the current starting point.
References
https://www.cdc.gov/niosh-rtecs/TI100590.html
2022 Guide to Occupational Exposure Values, American Conference of Industrial Hygienists