Diethylenetriamine (2540)

by National Institute for Occupational Safety and Health

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OSHA:  

no PEL

NIOSH:  

no REL

ACGIH:  

no TLV (1 ppm = 5.98 mg/m 3

PROPERTIES:  

liquid; d 0.98 g/mL @ 20 °C; BP 277.4 °C; VP unknown; flash point 118 °C

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SYNONYMS:  

diethylenetriamine; DETA; aminoethylethandiamine; 3-azapentane-1,5-diamine; bis(2-aminoethyl)amine

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SAMPLER:  

SOLID SORBENT TUBE (1-naphthylisothiocyanate- coated XAD-2, 80 mg/40 mg)

FLOW RATE:  

0.01 to 0.1 L/min [1]

VOL-MIN:  

1 L @ 10 ppm

-MAX:  

20 L

SHIPMENT:  

routine

SAMPLE STABILITY:  

>30 days @ 20 °C [2]

BLANKS:  

2 to 10 field blanks per set

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ACCURACY

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RANGE STUDIED:  

0.016 to 8 mg/m 3; (10-L samples)

OVERALL PRECISION(Sˆ rT):  

0.06 [1]

BIAS:  

-1.9%

ACCURACY:  

±13.7%

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Measurement

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TECHNIQUE:  

HPLC, UV DETECTION

ANALYTE:  

naphthylisothiourea derivative of analytes

DESORPTION:  

2 mL dimethylformamide (DMF), ultrasonic 30 min

INJECTION VOLUME:  

10 μL

COLUMN:  

10-μm radial cyano, 10 cm x 8-mm ID in Waters RCM-100 radial compression mode

MOBILE PHASE:  

50/50 isoctane/isopropanol at 3 mL/min

CALIBRATION:  

standard solutions of derivatives in

RANGE:  

1 to 119 μg per sample

ESTIMATED LOD:  

0.3 μg per sample

PRECISION (Sr):  

0.018

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APPLICABILITY:  

The working range for TETA is 0.08 to 160 mg/m 3 for a 10-L air sample. This method is the result of evaluation [2] of OSHA Method #60 for DETA, EDA, TETA [1]. The theoretical capacity of each front section is 1.6 mg of TETA.

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INTERFERENCES:  

Other primary or secondary amines may react with the sampler coating reagent, and thereby reduce the sampler capacity.

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OTHER METHODS:  

This replaces NIOSH Method P&CAM 276 [3]. The method of Anderson, et al., for EDA [4] is an alternate method using thiourea derivatization and HPLC analysis.

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