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YS/T 357-2015 English PDF (YST357-2015)

YS/T 357-2015 English PDF (YST357-2015)

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YS/T 357-2015: O-Isopropyl-N-ethyl thionocarbamate

This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation, storage, quality certificate and order form (or contract) content of O-Isopropyl-N-ethyl thionocarbamate. This standard applies to O-Isopropyl-N-ethyl thionocarbamate flotation reagents, which are synthesized from isopropyl xanthate, monochloroacetic acid, sodium carbonate, monoethylamine as raw materials.
YS/T 357-2015
YS
NONFERROUS METAL INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 71.100.40
H 34
Replacing YS/T 357-1994
O-Isopropyl-N-ethyl thionocarbamate
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ISSUED ON: APRIL 30, 2015
IMPLEMENTED ON: OCTOBER 01, 2015
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Requirements ... 4
4 Test methods ... 5
5 Inspection rules ... 5
6 Marking, packaging, transportation, storage, quality certificates ... 6 7 Contents of order form (or contract) ... 8
Appendix A (Normative) Determination of O-Isopropyl-N-ethyl thionocarbamate content - Gas chromatography ... 9
O-Isopropyl-N-ethyl thionocarbamate
1 Scope
This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation, storage, quality certificate and order form (or contract) content of O-Isopropyl-N-ethyl thionocarbamate.
This standard applies to O-Isopropyl-N-ethyl thionocarbamate flotation reagents, which are synthesized from isopropyl xanthate, monochloroacetic acid, sodium carbonate, monoethylamine as raw materials.
2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard.
GB/T 4472 Determination of density and relative density for chemical products GB/T 6678 General principles for sampling chemical products
GB/T 6680 General rules for sampling liquid chemical products
GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 9722 Chemical reagent - General rules for the gas chromatography
GB/T 13508 Polyethylene blown containers
SN/T 0271 Rules for the inspection of transport packaging for export commodities - Plastic container
3 Requirements
3.1 Designation, chemical formula, structural formula, relative molecular mass, chemical name
The designation, chemical formula, structural formula, relative molecular mass, chemical name of O-Isopropyl-N-ethyl thionocarbamate shall comply with the 5.1.1 The product shall be inspected by the supplier's quality supervision department, to ensure that the product quality meets the requirements of this standard or the order form (or contract); meanwhile a quality certificate shall be filled out. 5.1.2 If necessary, the purchaser may inspect the received products, in accordance with the provisions of this standard. If the inspection results are inconsistent with the provisions of this standard or the order form (or contract), it shall be reported to the supplier, within 15 days from the date of receipt of the product, to be settled through negotiation between the supplier and the purchaser. If arbitration is required, arbitration sampling shall be carried out, jointly by both the supplier and the purchaser. 5.2 Group-batching
O-Isopropyl-N-ethyl thionocarbamate shall be submitted for acceptance in batches; each batch shall be composed of products of the same grade and appearance quality. 5.3 Inspection items
Each batch of products shall be inspected for chemical composition, physical requirements, appearance quality.
5.4 Sampling methods
The sampling method of O-Isopropyl-N-ethyl thionocarbamate shall be carried out, in accordance with the provisions of GB/T 6680. The number of product sampling units shall be carried out, in accordance with the provisions of GB/T 6678. The total amount of sampling shall meet the needs of inspection.
Divide the sample into two sets, each set has a sample volume of not less than 300 mL. Put them into clean and dry glass bottles with ground stoppers, respectively. Attach label, indicating the specimen name, batch number, sampling date. One bottle is for inspection AND the other bottle is kept for future reference.
5.5 Judgment of inspection results
5.5.1 If the chemical composition, physical requirements, appearance quality inspection results are inconsistent with this standard or the order form (or contract), it shall double the amount of samples, from the same batch of products for repeated test. If only one of the repeated test results does not comply with the requirements of this standard, the whole batch of products will be deemed unqualified. Digital rounding is performed, in accordance with GB/T 8170.
5.5.2 If the products received by the purchaser are damaged, due to transportation or storage, the departments involved shall be responsible.
6 Marking, packaging, transportation, storage, quality
certificates
6.1 Marking
Each packaging container shall be marked with a color, that is not easy to fall off: a) Supplier?€?s name and address;
b) Product name;
c) Product batch number and net weight;
d) This standard number;
e) The words ?€?Avoid sun exposure?€?, ?€?Avoid fire?€?, ?€?Do not reverse?€?;
f) Date of exit-factory (or date of packaging).
6.2 Packaging
6.2.1 Plastic barrel packaging
The product is available in 200 L closed plastic barrels, with a net product weight of 200 kg ?? 0.5 kg per barrel; or IBC plastic square barrels, with a net product weight of 800 kg ~ 1000 kg per barrel. Plastic barrels used for domestic products shall comply with the provisions of GB/T 13508; plastic barrels used for export products shall comply with the provisions of GB/T 13508 and SN/T 0271, meanwhile it shall be accompanied by valid inspection and quarantine results certificates.
6.2.2 If the purchaser has special requirements for packaging containers, they can be negotiated and agreed upon by both the supplier and the purchaser, and noted in the contract.
6.3 Transportation and storage
The storage conditions of the product shall be cool, ventilated, sun-proof, isolated from fire sources. The product cannot be placed horizontally or upside down. 6.4 Quality certificate
Each batch of products shall be accompanied by a quality certificate, stating: a) Supplier?€?s name, address, telephone number, fax number;
b) Name of the purchaser;
c) Product name, designation, batch number, grade;

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