This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation, storage and shelf life of methylpyrazine. This standard is applicable to the analysis and evaluation of the quality of methylpyrazine obtained by chemical synthesis with ethylenediamine and methylglyoxal as the main raw materials or 2-methylpiperazine as the main raw material. It is also applicable to the analysis and evaluation of the quality of methylpyrazine, a food additive. QB/T 2751-2005 Methylpyrazine QB/T2751-2005 Standard download decompression password: www.bzxz.net

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Customer case number, 1676G-2006
Light Industry Standard of the People's Republic of China
OB/T27512005
Methylpyrazine
Methyl pyrazine
2005-09-23 Issued
National Development and Reform Commission of the People's Republic of China 2006-05-01 Implementation
QB/T2751—2005
The technical requirements of this standard are consistent with the "Phenylpyrazine (code name: JECFA761)" formulated by the Joint Expert Committee on Food Additives (JECFA) under the Codex Alimentarius Commission (CAC). The test method adopts the general test method of fragrance. The relevant part of the test adopts the relevant ISO standard.
The reference A of this standard is an informative appendix.
The standard for light wood is proposed by the industry association. This standard is under the jurisdiction of the Technical Committee on Standardization of Fragrance and Cosmetics. This standard is issued for the first time by the responsible persons of Tengzhou Yitong Aggregate Co., Ltd. and Shanghai Spice Research Institute in Beijing. The ten key persons in charge of this standard are Gong Jun, Xu Yi and Jin Qizhang.
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1 Scope
Methylpyrazine
QB/T 2751 -2006
This standard specifies the requirements, test methods, inspection specifications and specifications, including table, transportation, storage and shelf life of pyrrolidone. This standard is applicable to the analysis and evaluation of the average quality of pyrrolidone produced by chemical synthesis with ethyl acetate and 2-methylpyrrolidone as the main raw materials. It is also applicable to the quality evaluation of toluene as a food additive. 2 Normative reference documents
The following documents shall become the standard before they are used. Any reference document of a certain period shall be subject to the provisions of this standard. The subsequent amendments (excluding the contents of the amendments) or revised versions shall not be applicable to this standard. However, the parties to the standard shall use the latest versions of these documents. For any reference document of an unknown period, the latest version shall apply to this standard. GB/T1153 9-1989 Essential oil column gas chromatography analysis method GB/T154 Determination of density of isolated and synthetic fragrances GB/T14454.2 Determination of refractive index of essential oils by gas chromatography-mass spectrometry GB/T14454.4 Determination of refractive index of essential oils 3 Product chemical name, molecular formula, structural formula, relative molecular mass Chemical name: CIN Formula: CIN Structural formula ：
Brightness, measured: 94.12 (according to the 1987 International Atomic Weight) 4 Requirements
4.1 Color: Colorless to light yellow liquid,
4.2 Aroma: Cocoa and nut-like aroma, 4.3 Relative density (25/25 center), 1.0071.031.44 Dispersion rate (20: 1.5010~1.5090.
4. 5Quantity ((C.%): 98.0.
5Test method
5.1Color verification
Put the test standard in the colorimetric tube, and observe the daily measurement regulations.5.2Aroma evaluation
According to the regulations of door 14454.2, the national ± management department provides the standard method, and the technology, quality inspection department and or shares of the virtual enterprise jointly confirm the standard column:
QB/2752025
5.3Relevant determination
Receive the welcome card of 11540.
5.4Refractive index determination
k.GB/T 14454.4.
5. 5 The quality of the product is determined by the following conditions:
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a position economy, the principle of recording and micro-control state
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local element machine: 2m~.3m, inner diameter: 3mm4mm:: PG·20M.%0%: sumWWAWUMCS60-日二信
fire constant real "chemical detector:
5.5.2 operating conditions
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distinguish: linear range temperature point ~240, speed period 5em: 1: 250r.
: 250:
Air:20nlmn30mla
:Pull-4 flow:
5.5.3 Expression of birth difference and abnormal pregnancy
An (1153-959 11.4 cases are in line with the requirements. Color band diagram of the product code (face recognition method) attached eight (data request) inspection rules
non-industry annual production, one inspection item tribute inspection, "year", should ensure that the product meets the requirements of the original standard, every ten, the product certificate has a quality reduction: when the, the content is the product! Inspection day, and the Pu rate information, the discount rate is the type of inspection item": the card number inspection is included in the original single generation of the night verification information of the original product of the academic quality of the whole collection: the product is in line with the requirements of this standard, each North property some changes, can not be distinguished price,
6.3 party: pick for packaging single: full let: 101 scan buy 2: 100 or more increase the separate punching% of the raw density of each packaging unit in the control m, can be used as a sample The whole production method of the sample enterprise is to separately radiate the harmful individual consumption and anti-closure compensation rate: the design center: the device label, period: the factory name, and your name, production: "port, place number, number of scenes and sampling period of one benefit work in Sichuan,! -Fan retention and preparation. 64 If the special slip mark does not contain the derivative ticket request, Sichuan will produce new situations. The state will attack and infect the selection and manufacture of forgetting the inspection and conclusion of the source. There is a sexual table: the flow can test the makeup.
6.5 "" The point needs to be changed for the product love letter production point, and the city’s two parties will understand the actual purchase of the whole machine. 7 signs, package table, pollution contract, storage and shelf life 7.1 signs
symptoms table outside the state: product completion, ", name, address, school, school, line, production plan column long quality period, allowed 2
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If there are special requirements for the order, you can make an agreement with the manufacturer. 7.2 Packaging
QN/T 2751-2005
The product should be packed in a sterile bottle, food grade plastic plate or plastic bag without impurities: or packaging required by the manufacturer. 3.3 Transportation
The transportation process should be simple and safe: no need to worry about the packaging, transportation, etc., the design should be fair and reasonable,
This product should be kept in a warehouse with good ventilation, free from impurities and pollution, and should be shipped from a distant source. 7.5 Warranty period
Under the conditions of transportation in accordance with Taiwan regulations, complete packaging, and without damage, the product has a warranty of "years". QB/T2751-2005
Attached to Thai A
(Informative Appendix)
Typical gas color of methylpyrrolidone
(Surface real one chemical cloud)
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