国产特级黄AV片,黄色电影一区二区三区,久久高清色视频,欧美乱人伦中文在线观看},HEYZO无码综合亚洲精品},国产乱产精品视频

標(biāo)準(zhǔn)品/2,3-二氨基甲苯

標(biāo)準(zhǔn)品/2,3-二氨基甲苯
產(chǎn)品編號:72283
CAS號:2687-25-4
規(guī)格:100mg
品牌:TMstandard
標(biāo)準(zhǔn)值:≥98.0%

分享到:

資料下載

2,3-二氨基甲苯

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 17025ISO 17034 and a registered quality management system ISO 9001.

Product Name 2,3-Diaminotoluene
Product Code72283
 
Lot Number-
 
CAS No.2687-25-4
 
Mol. Weight122.17
 
Mol. FormulaC7H10N2
 
Melting Point59-65℃(dec.)
 
Expiry Date-
 
Boiling pointN/A
 
AppearanceDark brown powder
 
Storage Temp-18℃,dark
C E R T I F I E D
Purity
99.1%
 
C E R T I F I E D
Expanded Uncertainty (U)
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.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards. The calibration of the balances is verified annually by an external accredited calibration service. This analysis method has been verified using an approach consistent with ISO 17034:2016 & ISO 17025:2017.

CERTIFICATE    ONQC    SIGNATURE
-RM Release
Method of Identification

HPLC/DAD

Batch Information

TGA: 1.6%

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.

Storage

This reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature here in. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture.

Hazards

Read Material Safety Data Sheet (MSDS) and understand any potential hazard(s) prior to the use of this product. All chemicals should be considered potentially hazardous in nature and should only be handled by qualified personnel using established good laboratory practices.

Homogeneity

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

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.Visit the support section of our website technology videos and frequently asked questions.


壇墨質(zhì)檢
  • 電話

    4008-099-669

    手機

    18168802993

在線客服
手游| 济阳县| 工布江达县| 玉树县| 通化市| 湘西| 五台县| 搜索| 湘西| 高淳县| 乐平市| 沙河市| 临桂县| 盐城市| 左贡县| 江西省| 泰和县| 渭南市| 高碑店市| 确山县| 习水县| 卫辉市| 怀化市| 新巴尔虎右旗| 扎赉特旗| 玛多县| 南溪县| 中宁县| 阿拉尔市| 浦县| 海口市| 萝北县| 会东县| 若尔盖县| 微山县| 泰宁县| 凤山县| 思茅市| 原阳县| 清流县| 宜兴市|