DRE-C14036500

Artlcle Name： Benzene

Formula：C6H6

Mol. Weight：78.11

CAS No.：71-43-2

Storage Temperature：20℃±4℃

Storage and handling The RM should be stored in the original sealed bottle at the temperatur given above.After use the bottle should be tightly closed and protected from moisture .

Purity：99.90% (g/g)

Expanded Uncertainty U   0.70% (g/g)

The uncertainty of this standard is alauiated in accordance with the IS0 17034 and EURACHEM/CITAC Guide-Quantifying Uncertainty in Analytical Measurement, Second Edition. The expandeduncertainty is U(exp) = u(RM)x k where k is the coverage factor at the 95% confidence level (k=2).Uncertainty u(RM) is based on the combination of the uncertainties associated with each individualoperation involved in the analysis of the product： u(RM) =√u{char)²+ u(bb)²+ u(lts)²+ u(sts)²;u(char) is the uncertainty of purity determination; u(bb) uncertainty of homogeneity test; u(ts) uncertaintyof stability test long-term; ulsts)uncetainty of stability test short-term. U([ts) and u(sts) are not induded in the calculation as the stability! sta tement is based on real evidence opposed to simulation.

Minimum sample： 1 mg is recommended as the minimal sample amount If less materialis used,it is recommended to increase the certified uncertainty by a factor of two for half sample and a factor offour for a quarter of sample.

Intended use： Use this RM as Calibrent for chromatography or any other analytical technique.

Analytlal Data

Traceability of chromatography： To the lintemational System of Units (SI).

Instrument：GC/FID

Detection：FID

Column：Optima-5MS, 0.25 μm, 0.25 mm

Inj-Vol.：1 μl

Flow：1.0 ml/min

RetTime：4.41 min

lnjector：100℃

Initial Temp：40℃ for 5 min

End Temp：100℃ for 2 min

Gradient：15℃/min

Comment

Traceabillty： The balances used are caibrated with weights traceable to the national standards (DKD).

Calibrated class A glassware is used for voumetric measurements.

Certificate Revision 1

Water Content： ＜0.10% (g/g) by Kalr-Fischer -Tieration (U(exp) = 0.03% (g/g)).

No chromatogram available.

ldentity： EA, NMR, RT, IR MS

注：证书信息仅供参考，以产品附带证书为准。