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Chemical Sampling Information (CSI)
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General Description

Synonyms: Mecoprop; CMPP; 2-((4-Chloro-o-tolyl)oxy)propionic acid; 2-(2-Methyl-4-chlorophenoxy)propanoic acid

OSHA IMIS Code Number: M126

Chemical Abstracts Service (CAS) Registry Number: 93-65-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: UE9750000; 67771

Chemical Description and Physical Properties:

solid
molecular weight: 215
melting point: 93°C

Health Factors

Health Effects: LD50 (oral, rat) 930 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm)
    maximum volume: 240 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/U
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

Conditions: Methanol extraction; C18 column; 59.5% methanol 39.5% water 1% Acetic Acid; 1 mL/min; UV Det: 254; C/P KM

Bulk Method:

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

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