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丙酸

BW901101

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79-09-4

1mL

秦境

99.5%

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丙酸介绍：

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	Propionic acid
Product Code	BW901101
Lot Number	23081538
CAS No.	79-09-4
Mol. Formula	C₃H₆O₂
Mol. Weight	74.08
Certified on	8 Aug 2023
Expiry Date	8 Aug 2026
Storage Temp	4°C ± 4°C
Specification	1mL

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.5%

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 external7 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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国家标准《食品安全国家标准食品添加剂丙酸》

标准名称及标准号	GB 1886.120-2015《食品安全国家标准食品添加剂丙酸》
适用范围	适用于以丙醛为原料经化学合成制得的食品添加剂丙酸，规定了其技术要求、检验方法、包装及储存要求。
核心检测方法	采用气相色谱法（GC）测定丙酸含量，辅以酸碱滴定法验证纯度，红外光谱法用于结构确认。
检出限与定量限	气相色谱法检出限为0.01 mg/kg，定量限为0.03 mg/kg；滴定法误差范围≤0.5%。
质控样品要求	需使用空白样品及加标回收样品，回收率应控制在95%-105%，平行样品测定偏差≤2%。
关键实验步骤	包括样品前处理（溶解、过滤）、色谱条件优化（柱温、流速）、标准曲线绘制及结果计算。
特别说明	实验需在通风橱内操作，避免接触皮肤；需排除其他有机酸（如乙酸）的干扰。

行业标准HG/T 5532-2019《工业用丙酸》

标准名称及标准号	HG/T 5532-2019《工业用丙酸》
适用范围	适用于工业用丙酸的质量控制，包括化学合成法生产的丙酸及其在化工、制药等领域的应用。
核心检测方法	采用高效液相色谱法（HPLC）测定主成分含量，水分测定采用卡尔·费休法，色度检测按铂-钴标尺法。
检出限与定量限	HPLC法检出限为0.005%，定量限为0.015%；水分测定精度为±0.02%。
质控样品要求	每批次样品需进行平行测定，相对标准偏差（RSD）≤1.5%，校准曲线R²≥0.999。
关键实验步骤	包括样品稀释、色谱柱选择（C18反相柱）、流动相比例优化及积分参数设置。
特别说明	需注意样品中可能存在的金属离子杂质对色谱柱的影响，建议使用保护柱。

国家标准GB/T 6488-2008《化学试剂丙酸》

标准名称及标准号	GB/T 6488-2008《化学试剂丙酸》
适用范围	适用于化学试剂级丙酸的品质检测，涵盖纯度、杂质含量及物理性质（密度、沸点）的测定。
核心检测方法	折光率法用于快速筛查，灼烧残渣测定按重量法，重金属检测采用比色法。
检出限与定量限	重金属（以Pb计）检出限为0.0001%，灼烧残渣定量限为0.001%。
质控样品要求	需使用标准物质进行仪器校准，灼烧残渣平行测定允许偏差≤0.002%。
关键实验步骤	包括样品干燥处理、比色皿清洗（避免指纹污染）、标准系列溶液配制。
特别说明	实验环境需控制湿度≤60%，防止样品吸潮影响灼烧残渣结果。

以上信息仅供参考，请以相应标准的原文为准！