Page:NIOSH Manual of Analytical Methods - 2552.pdf/1

 METHYL ACRYLATE MW: 86.1

C4 H6 O2 METHOD: 2552, Issue 1

2552

CAS: 96-33-3

RTECS: AT2800000

EVALUATION: PARTIAL

PROPERTIES:

OSHA : 10 ppm NIOSH: 10 ppm ACGIH: 2 ppm (skin notation) (1 ppm = 3.52 mg/m ) 3

Issue 1: 15 March 2003

flammable liquid; den = 0.9574 g/mL @ 20°C; BP = 80.5°C; VP = 65 mm Hg @ 20°C; Flash Point = -3°C; FP = -76.7°C; Vapor Density = 2.95.

SYNONYMS: Methoxycarbonylethylene, Methyl ester of acrylic acid, Methyl propenoate, 2-propenoic acid methyl ester.

SAMPLING SAMPLER:

SOLID SORBENT TUBE (Anasorb CMS, 150/75 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

1 L @ 10 ppm 5L

SHIPMENT:

Keep cold; pack securely for shipment.

SAMPLE STABILITY:

30 days @ 5°C

BLANKS:

2 - 10 field blanks per set

ACCURACY RANGE STUDIED:

Not studied.

BIAS:

Not determined.

OVERALL PRECISION (Ö r T ):

Not determined.

ACCURACY:

Not determined.

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

methyl acrylate

DESORPTION:

1 mL of carbon disulfide with agitation.

INJECTION VOLUME:

1 µL

TEMPERATURE -INJECTION: 250 °C -DETECTOR: 300 °C -COLUMN: 35 °C (hold 3 min) to 150 °C (8°C/min) CARRIER GAS:

He (2.6 mL/min)

COLUMN:

Capillary, fused silica, 30-m x 0.53-mm ID; 3:m film crossbonded® 35% diphenyl-65% dimethyl polysiloxane or equivalent

CALIBRATION:

Solutions of methyl acrylate in CS2

RANGE:

1.9 to 172.3 µg per sample [1]

ESTIMATED LOD: 0.5 ug per sample [1] PRECISION ( þ r ):

0.007 [1]

APPLICABILITY: The working range is 0.11 to 9.79 ppm (0.39 to 34.5 mg/m3 ) for a 5 L air sample [1]. Method is applicable to any sampling environment where methyl acrylate is present in the vapor state.

INTERFERENCES: Any compound eluting during the analysis and having a similar retention time.

OTHER METHODS: This method udates NMAM 1459 [2] which is Method S38 from the 2nd edition of the NIOSH Manual of Analytical Methods [3]. Improvements include but are not limited to the following: smaller volume of desorption solvent required, desorption efficiency (DE) results were improved by using a different solid sorbent tube, and a lower LOD/LOQ was established [1]. A storage stability study was completed and was found acceptable with a 105.3% recovery after 4 weeks at 5°C [1].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition