异丙醇_单标_有机类_标准物质_萘析商城

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异丙醇

BW901134

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100mg

秦境

99.9%

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异丙醇介绍：

REFERENCE MATERIAL CERTIFICATE

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	2-Propanol
Product Code	BW901134
Lot Number	23111511
CAS No.	67-63-0
Mol. Formula	C₃H₈O
Mol. Weight	60.10
Certified on	9 Nov 2023
Expiry Date	8 Nov 2028
Storage Temp	4°C ± 4°C
Specification	100mg

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.9%

1.0%

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

GB/T 7814-2017 工业用异丙醇

2. 适用范围

本标准规定了工业用异丙醇的技术要求、试验方法、检验规则及标志、包装、运输、贮存等要求，适用于以丙烯为原料经水合法或丙酮加氢法生产的工业用异丙醇。

3. 核心检测方法

主要采用气相色谱法（GC）测定异丙醇纯度及杂质含量，同时规定水分测定按卡尔·费休法，酸度通过酸碱滴定法完成。

4. 检出限与定量限

气相色谱法对异丙醇中主要杂质（如丙酮、正丙醇）的检出限为0.001%（质量分数），定量限为0.005%；水分测定的检出限为0.005%（卡尔·费休法）。

5. 质控样品要求

实验需使用有证标准物质（CRM）进行校准，质控样品应包含异丙醇主体及典型杂质（如丙酮、水等），浓度范围需覆盖实际样品可能存在的波动区间。

6. 关键实验步骤

① 样品前处理：确保样品均匀且无挥发损失；
② 气相色谱条件优化：选用极性色谱柱（如PEG-20M），进样口温度200℃，检测器温度250℃；
③ 卡尔·费休滴定前需对仪器进行标定，避免环境湿度干扰。

7. 特别说明

异丙醇具有挥发性和易燃性，实验需在通风橱中操作；废液需按危险化学品废弃物规范处理。检测结果需结合不确定度评估，并在报告中注明检测方法依据的标准编号。

以上信息仅供参考，请以相应标准的原文为准！