This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation, storage and shelf life of trimethylpyrazine. This standard is applicable to the quality analysis and evaluation of trimethylpyrazine obtained by chemical synthesis with 1,2-propylenediamine and diacetyl as the main raw materials. It is also applicable to the quality analysis and evaluation of trimethylpyrazine as a food additive. QB/T 2749-2005 Trimethylpyrazine QB/T2749-2005 Standard download decompression password: www.bzxz.net

ICS 71.100.60
Award number: Y41
Registration number: 16759-2006
Light Industry Standard of the People's Republic of China
QR/T2749-2005
Trimethylpyrazine
Trimethylpyrazine
Published on September 23, 2005
National Development and Reform Commission of the People's Republic of China Implemented on May 1, 2006
QB/F2749—2005
The technical requirements of this standard are consistent with the "Dimethoxythiophene" (code name JFCFA774) determined by the Joint Committee on Food Additives (CFA) under the Codex Alimentarius Commission (CAC). The test method adopts the universal test method for materials, which is a partial representation of the ISO standard.
This standard is included as a data appendix.
This standard is submitted by China National Light Industry Federation
This standard is owned by the National Vertical Fragrance and Cosmetics Standardization Committee of Hong Kong. This standard is valid for 2006. The person in charge is: Wang Jie, Yu Yi, Jin Qijing, this standard is first issued:
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One standard
Trimethylpyrazine
QB/T2749—2005
This standard specifies the requirements, test methods, specification and marking, data, transportation, storage and shelf life of dimethylpyrazine. This standard does not apply to the mass analysis of trifluoroacetic acid products obtained by chemical synthesis or preparation with 1,2-dihydropyridine and 1,2-dihydropyridine as the main raw materials. It is also used to analyze the mass of trifluoroacetic acid products that require quota dosing: 2 Normative referenced documents
The clauses in the following documents become non-standard clauses through introduction to this standard. For referenced documents with a date indicated, all subsequent versions (excluding errata) are not applicable to this standard. However, parties that have reached an agreement based on this standard are encouraged to use the latest versions of these documents. For any referenced documents without a date indicated, their latest versions are applicable to this standard. GB539-189 General method for chromatographic analysis of essential oils GB/T11540 Determination of relative density of isolated and synthetic spices GB/T14454.2 Determination of aroma of spices GB/T14454.4 Determination of refractive index of spices 3 Chemical name, molecular formula, structural formula and relative molecular mass of products Chemical name: CHN Fraction, CHN Structural formula, Relative molecular mass: 122.17 (according to 1987 International Standard) 4 Requirements 4.1 Color: colorless, light-colored liquid. 4.2 Aroma: with the smell of roasted fruit or baked potatoes. 4.3 Scan density (25/25℃): 0.960~0.990 Refractive index (20, 1.500-1.5090
4.5 Content (GC,%) 98,0:
5 Test method
Color determination
Put the sample in a colorimetric tube and observe it by the method. 5.2 Aroma evaluation
According to the specification of B force 14454.2. When the national semi-pipeline department cannot provide a common standard, the enterprise technology. Quality registration department and or QR/T 2749 should be used. 2335
According to the standard of the case
53 Relative density measurement
Find the standard of /11.540.
5.4 Determination of refractive index
According to the standard of /1【4454.4
5.5 Determination of the year
5.5.1 Safety case
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C1/:11539-:989 in 11.4 reduction determination, into the same evil request: in this throat classic soft gas phase production consumption diagram (and from the woman a · change) see the time to ask the person to steal the science piece show) 6 inspection regulations
61 a base this tiger towel production, flow control department more than receiving inspection: the production plant to prove that the factory products will meet the requirements of each batch out! ， the products shall be of good quality and suitable for use.， the product shape, content, and quality shall be inspected for the whole day.， relatively speaking, the products shall be inspected for one day before the end.， the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， relatively speaking, the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， relatively speaking, the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， relatively speaking, the products shall be inspected for the whole day.， the products shall be inspected for the whole day.， relatively speaking, the products shall be inspected for the whole day. 64 Insurance collection center does not meet the current standard requirements, and will report the test and adjustment together with the production. Training and inspection indicators do not meet the requirements, and the North cannot accept the inspection. 6.5 Lan provides the "product opening and production differences": the actual difference can be solved by the power efficiency right or by the inspection ticket machine efficiency. 7 Marking, packaging, freight, purchase and storage 7.1 Marking
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Q0/T27492005
: Packing: Product name, production address, number, batch loss, net year, production period and shelf life, Xuchuan certificate number and wooden shipping license, the return unit has to keep the account, and can contact the production plant and order. 7.2 Packaging
3. The product should be placed in clean, grade H plastic bottles or glass bottles, or packed according to the requirements of the month. 7.3 Transportation
The product should be lightly packed in the transportation department, and should not be in contact with the main building, platform, and other objects. It should also comply with the regulations of the self-propelled door.
4 Storage
This product should be placed in a well-ventilated place to avoid air pollution and away from fire sources. 7.5 Shelf life
If the product is in accordance with the designated area, packaging, and sealing conditions, the product shelf life is 10 years: QBT 2749—2005bzxZ.net
Agglomeration A
【Informative Appendix）
Detailed typical gas chromatogram of trimethylpyrrolidone
（Integral normalization method）
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