NAME: Methyl Parathion

SYNONYM(s): Phosphorothioic Acid O,O-Dimethyl O-(p-Nitrophenyl) Ester

IMIS: 1775

CAS: 298-00-0

NIOSH: RTECS TG0175000; 59500

DOT: NA3018(liquid) NA2783(solid) Poison

DESCRIPTION:

Solid.
MP: 37-38 C

ACGIH TLV: 0.2 mg/m3 TWA (Skin); Appendix A4 (Not Classifiable as a Human Carcinogen)

NIOSH REL: 0.2 mg/m3 TWA (skin)

IARC: Group 3, not classifiable as to its carcinogenicity to humans

HEALTH EFFECTS: Cholinesterase inhibition (HE6); Suspect teratogen (HE5) Mutagen (HE2); LD50 (oral, rat) 14-24 mg/kg HISTORY M108 assigned 3/82 by lab, corrected to 1775

PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):

MEDIA: OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/60 mesh) with Glass Fiber Filter enclosed
MAX V: 480 Liters   MAX F: 1.0 L/min
ANL 1: Gas Chromatography; GC/FPD
REF: 2 (OSHA In-House File)
CLASS: Partially Validated
NOTE: OSHA personnel may obtain sampling tubes from SLTC.

COND: Column 3% OV-17; Oven T 170 deg. C; Inj T 250 deg. C; Det T 225 deg. C; Retention time, 5 min; DL 1.0 ug/sample; C/P WEB 4/82

WIPE:

Yes, with Glass Fiber Filter

BULK METHOD:

Limit the amount of bulk submitted to one gram or one mL.