乙酸戊酯_单标_有机类_标准物质_萘析商城

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乙酸戊酯

BW901036

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628-63-7

0.5mL

秦境

99.5%

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戊酸
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乙酸戊酯介绍：

Reference Material

This certificate is designed in accordance with ISO 17034 and ISO Guide 31. This reference material (RM) was designed,produced and verified in accordance with ISO/IEC 17025, ISO 17034 and a registered quality management system ISO9001.

Product Name	n-Pentyl Acetate
Product Code	BW901036
Lot Number	23041537
CAS No.	628-63-7
Mol. Formula	C₇H₁₄O₂
Mol. Weight	130.18
Certified on	20 Apr 2023
Expiry Date	19 Apr 2025
Storage Temp	20°C ± 4°C
Specification	0.5 mL

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.5%

0.5%

Uncertainty

The certified value(s) and uncertainty(ies) are determined in accordance with ISO 17034 with an 95% confidence level (k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation, homogeneity and stability testing. Stability values are based on real evidence opposed to simulation.

The producer certifies that this reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature herein. Product warranties for this reference material are set out in the terms and conditions of purchase.

Intended Use

This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.

Safety

Proper precautions should be observed while handling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards (DKD). The calibration of the balances is verified daily internally and annually by an external accredited calibration service. Chromatographic methods are traceable to the International System of Units (SI).

Homogeneity

Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.

Storage

The RM should be stored in the original sealed container at the indicated temperature.

Instructions for use

It is recommended to use 1 mg as the minimum sample size and if less material is used, to increase the certified uncertainty by a factor of two for half sample and four for a quarter of sample. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture. If the RM was in a sealed ampoule, it should be transferred to a vial with minimum head space.

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本公司销售的所有产品仅供实验科研使用，不用于人体及临床诊断。

1. 标准名称及标准号

标准名称	工作场所空气有毒物质测定酯类化合物（含乙酸戊酯）
标准号	GBZ/T 300.67-2017

2. 适用范围

适用于工作场所空气中乙酸戊酯及其他酯类化合物的浓度检测，涵盖采样、样品处理和仪器分析全流程。

3. 核心检测方法

使用活性炭管采集空气中的乙酸戊酯，溶剂解吸后经气相色谱仪（GC-FID）进行定量分析，以保留时间定性，峰面积定量。

4. 检出限与定量限

检出限	0.5 μg/mL（溶剂中浓度）
定量限	1.6 μg/mL（溶剂中浓度），对应空气浓度0.8 mg/m³（按15 L采样体积计算）

5. 质控样品要求

需同步采集空白样品、平行样品及加标回收样品。平行样相对偏差应≤15%，加标回收率范围需在85%-110%之间。

6. 关键实验步骤

1. 采样：活性炭管以0.5 L/min流量采集空气，采样体积≤15 L；
2. 解吸：二硫化碳解吸30分钟；
3. 分析：GC-FID采用毛细管色谱柱（如HP-5），程序升温（初始50℃，升温速率10℃/min至200℃），进样口温度250℃。

7. 特别说明

① 若样品中乙酸戊酯浓度超出标准曲线范围，需稀释后重新分析；
② 需注意活性炭管与其他酯类化合物的交叉干扰，必要时采用质谱确认；
③ 采样时需记录环境温度和大气压，用于结果换算。

以上信息仅供参考，请以相应标准的原文为准！