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GB/T 638-2018 English PDF

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Upon your order, we will start to translate GB/T 638-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version GB/T 638-2018?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 638-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 638-2018: Chemical reagent -- Stannous chloride dihydrate
Status: Valid

GB/T 638: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 638-2018	199	Add to Cart	3 days	Chemical reagent -- Stannous chloride dihydrate	Valid
GB/T 638-2007	279	Add to Cart	3 days	Chemical reagent -- Tin (11) chloride dihydrate	Obsolete
GB/T 638-1988	199	Add to Cart	2 days	Chemical reagent--Tin (2) chloride dihydrate	Obsolete

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Basic data

Standard ID: GB/T 638-2018 (GB/T638-2018)
Description (Translated English): Chemical reagent -- Stannous chloride dihydrate
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 10,138
Date of Issue: 2018-06-07
Date of Implementation: 2019-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 638-2018: Chemical reagent -- Stannous chloride dihydrate

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical reagent--Stannous chloride dihydrate ICS 71.040.30 G62 National Standards of People's Republic of China Replace GB/T 638-2007 Chemical reagent Stannous chloride dihydrate (stannous chloride) (ISO 6353-2.1983, Reagentsforchemicalanalysis- Part 2.Specifications-Firstseries, NEQ) Published on.2018-06-07 2019-01-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 638-2007 "chemical reagent stannous chloride (II) chloride (thin chloride)", and GB/T 638-2007 Compared to the main technical changes are as follows. --- Increased sodium, potassium, calcium three specifications and determination methods (see Chapter 4, 5.6, 5.7, 5.8); ---Modified packaging and logo (see Chapter 7, Chapter 7 of the.2007 edition); --- Cancel hydrogen sulfide without sediment (Chapter 4, 5.11 of the.2007 edition). This standard uses the redrafting method reference ISO 6353-2.1983 "Chemical Analysis Reagents Part 2. Specifications 1 Series" in R38 The preparation of "stannous chloride dihydrate" is not equivalent to ISO 6353-2.1983. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63). This standard was drafted. Guangdong Guanghua Technology Co., Ltd., Chongqing Chuandong Chemical (Group) Co., Ltd. The main drafters of this standard. Zhou Lang, Zhang Min, Zhang Jianfeng, Chen Qunqing, Zhang Zhibin, Wang Lu. The previous versions of the standards replaced by this standard are. ---GB/T 638-1965, GB/T 638-1978, GB/T 638-1988, GB/T 638-2007. Chemical reagent Stannous chloride dihydrate (stannous chloride)

1 Scope

This standard specifies the properties, specifications, tests, inspection rules, packaging and marking of the chemical reagent stannous chloride dihydrate (stannous chloride). This standard applies to the chemical reagent stannous chloride dihydrate (stannous chloride).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution Preparation of standard solution for GB/T 602 chemical reagent impurity determination Preparation of preparations and products used in GB/T 603 chemical reagent test method GB/T 610-2008 General method for determination of arsenic in chemical reagents GB/T 6682 Analytical laboratory water specifications and test methods GB/T 9723-2007 General rules for chemical reagents for flame atomic absorption spectrometry GB/T 9728 chemical reagent sulfate determination method GB 15346 chemical reagent packaging and marking HG/T 3484 Chemical Reagent Standard Glass Emulsion and Clarity Standard HG/T 3921 Chemical Reagent Sampling and Acceptance Rules

3 traits

This product is colorless crystal, which is hydrolyzed in water to form an insoluble basic salt. It is dissolved in dilute hydrochloric acid solution and gradually oxidized in air. Molecular formula. SnCl2·2H2O Relative molecular mass. 225.62 (according to the international relative atomic mass in.2013) CAS No.. 10025-69-1

4 specifications

The specifications of stannous chloride dihydrate are shown in Table 1. Table 1 Specifications of stannous chloride dihydrate Name analysis Content (SnCl2·2H2O), w/% ≥98.0 ≥97.0 Clarity test/number ≤ 3 ≤ 5 Insoluble matter of hydrochloric acid, w/% ≤0.005 ≤0.01 ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 638-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 638-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 638-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 638-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 638-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 638-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.