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METHOMYL
| CAS # | 16752-77-5 |
|---|---|
| Formula |
C₅H₁₀N₂O₂S |
| Synonyms |
Lannate; methyl N-((methylamino)carbonyl)oxy)ethanimidothioate; S-methyl-N-(methylcarbamoyloxy)thioacetimidate |
| Physical description | White, crystalline solid with a slight, sulfur-like odor. | ||
|---|---|---|---|
| Boiling point | Molecular weight | 162.2 | |
| Freezing point/melting point | 172°F | Vapor pressure | 0.00005 mmHg at 77°F |
| Flash point | Vapor density | ||
| Specific gravity | 1.29 at 75°F | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1644 |
|---|---|
| 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* |
|
| Sampling volume (TWA)* |
60 L |
| Sampling flow rate (TWA)* |
1 L/min |
| Sampling volume (STEL/Peak/C)* |
|
| Sampling flow rate (STEL/Peak/C)* |
|
| Analytical method instruments | HPLC |
| Method reference | OSHA PV2114 (partially 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 |
|
REL-TWA |
2.5 mg/m³ |
TLV-TWA |
0.2 mg/m³ (inhalable fraction and vapor) [2013] |
PEL-TWA |
2.5 mg/m³ |
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
Y |
Skin notation |
Y |
|
Notes:
Not established |
Notes:
|
Notes:
BEI® |
Notes:
|
||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: TLV-A4 |
Notes:
|
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Methomyl NIOSH: Pocket Guide to Chemical Hazards - Methomyl Literature References
|
Last Updated Date : 01/28/2021