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Chemical Sampling Information (CSI)
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General Description

Synonyms: Cercobin; Topsin; Nematax; 1,2-bis(3-Ethoxycarbonyl-2-thioureido)benzene

OSHA IMIS Code Number: T408

Chemical Abstracts Service (CAS) Registry Number: 23564-06-9

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: BA3650000; 5370

Chemical Description and Physical Properties:
colorless plates
melting point: 195° (dec.)
Health Factors

Health Effects: LD (oral, rat) 1,5000 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Glass Fiber Filter (37 mm)
    maximum volume: 180 Liters
    maximum flow rate: 1 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/U.
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions: Chloroform Extraction, Column Zorbax NH2; solvent 70% Isooctane - 10% Isopropanol - 20% Methanol; UV detector 229 and 267 nm; 1 mL/min; RT 7.1 min; DL 45 ng/inj C/P 5/88

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter
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