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PARATHION†
| CAS # | 56-38-2 |
|---|---|
| Formula |
C₁₀H₁₄NO₅PS |
| Synonyms |
O,O-diethyl-O(p-nitrophenyl) phosphorothioate; diethyl parathion; ethyl parathion; parathion-ethyl |
| Physical description | Pale-yellow to dark-brown liquid with a garlic-like odor. | ||
|---|---|---|---|
| Boiling point | 707°F | Molecular weight | 291.3 |
| Freezing point/melting point | 43°F | Vapor pressure | 0.00004 mmHg |
| Flash point | 248-320F | Vapor density | |
| Specific gravity | 1.27 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 4 | NFPA fire rating | 1 |
| NFPA reactivity rating | 2 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1984 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16] |
| Sampling time* | 480 min |
| Sampling volume (TWA)* | 480 L |
| Sampling flow rate (TWA)* | 1 L/min |
| Sampling volume (STEL/Peak/C)* | 15 L |
| Sampling flow rate (STEL/Peak/C)* | 1 L/min |
| Analytical method instruments | GC-FPD |
| Method reference | OSHA 62 (fully validated) |
| Notes | |
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | Wipe with GFF (37 mm), Type A/E [AP4003705] |
|---|---|
| Bulk Method | Limit the amount of bulk submitted to 1 g or 1 mL. |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
0.1 mg/m³ |
REL-TWA |
0.05 mg/m³ |
TLV-TWA |
0.05 mg/m³ (inhalable fraction and vapor) [2000] |
PEL-TWA |
0.1 mg/m³ |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
| Notes: | Notes: |
Notes:
BEI® |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
10 mg/m³ |
|||||
| Carcinogenic classifications: IARC-3, TLV-A4, EPA-C | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Parathion NIOSH: Pocket Guide to Chemical Hazards - Parathion Literature References
|
Last Updated Date : 01/07/2021