This standard specifies the technical requirements, test methods, inspection rules, etc. for methyl cedryl ketone. This standard applies to methyl cedryl ketone obtained by catalytic reaction with cedryl ketone and acetic anhydride as raw materials. QB/T 1431-1992 Methyl cedryl ketone QB/T1431-1992 Standard download decompression password: www.bzxz.net

Title Content and Scope of Application
Industry Standard of the People's Republic of China
Methyl cedryl ketone
Methyf cedryl katona
This standard specifies the technical requirements, test methods and inspection specifications of methyl cedryl katona. QB1431--92
This standard is applicable to methyl cedryl katona obtained by catalytic reaction with cedryne and acetic anhydride as raw materials. Cited standards
GB11$39 General method for gas chromatography analysis of isolated and synthetic spices
QB793 Standard test method for spices Preparation method of standard solution QB 794
OB 795
Standard test method for spices Color test method
Standard test method for spices Aroma test method
Standard test method for spices Refractive index determination method Standard test method for spices Acid value determination method
Standard test method for spices Ketone and aldehyde determination method QB974 Determination of relative density of essential oils
Product chemical name, fraction, structural formula, molecular weight Chemical name: Methyl cedar ketone, acetyl cedarene Fraction: CHα
Structural formula:
Molecular weight: 246.4 (according to the International Standard 1987) 4 Technical requirements
4.1: Soft color, light yellow to flavan color transparent chain. Approved by the Ministry of Light Industry of the People's Republic of China on February 21, 1992. Validation date: August 1, 1992.
5 —
20 1431 --.92:
4.2 Odor: woody aroma, with a longevity aroma similar to that of amber. 4.3 Relative density (20/20℃): 0.996~1.D11. #.4 Refractive index (20): 1.5160~15220. 4.5 Acid value: ≤2.0.
4.6 Ketone content (%): 280.0.
5 Test method: Unless otherwise specified, the test samples used in the test are analytically pure test samples: water is distilled water with a relatively high purity. 5.1 Color inspection: See QB794.
5.2 Determination of aroma
See QB795.
5.3 Micro-determination of relative density, 20/20%
See QB974g
5.4 Determination of refractive index, 20℃
See QB798.
5.5 Determination of acidity
See QB80G.
5.6 Determination of tolerance
See QB809 (first method hydroxylamine method).
Test volume, 1g.
Reflux time, 1.5h.
Note: Determine the ketone content according to GB13539, see Appendix A (quarterly test) 6 Inspection rules
6.1 The ketone content should be tested by the technical inspection department of the manufacturer to verify that all the products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory should have a quality certificate. The content includes the manufacturer's name, product name, trademark, production date, batch number, net weight, product quality certificate of compliance with this standard and standard number. 6+2 The acceptance unit has the right to select and judge whether the quality of the products before receipt meets the requirements of this standard according to the test method and inspection rules specified in this standard.
6.3 Take 2 units from each batch of packaging units below 100, and take 8 units from each batch of packaging units above 100. After opening the package, check the moisture and softness first, then shake it to mix it thoroughly, and then use a glass sampling tube to take 50-100ml of sample from each packaging unit, and inject it into the mixer to mix evenly. Put them into two clean glass bottles with frosted lids. Mark the bottles with: manufacturer name, product name, batch number, quantity, sampling date and sampler. One bottle is used for inspection and the other is kept for backup. 6.4 If any index does not meet the requirements of this standard, the manufacturer can double the sample for re-inspection. If the re-inspection results still show unqualified indexes, the batch of products cannot be accepted. 6.5 When the supply and demand parties have objections to the product quality, they can negotiate to solve the problem or invite a statutory inspection unit, and the cost shall be borne by the responsible party.
7 Standard state, packaging, transportation and storage
Q8 431 92
7.1 The base should be packed in galvanized wire, aluminum wire, inner resin or brown glass bottles with good sealing properties. The name of the manufacturer, product name, batch number, net weight, gross weight, date of manufacture and the number of this standard shall be indicated on the outside of the package. 7.2 This product shall be stored in a cool, dry and ventilated place to prevent contamination by foreign gases and away from fire. 7.3 During transportation, it shall be strictly protected from sunlight and rain, and it is strictly forbidden to mix with acids and alkalis. 7.4 In accordance with the specified transportation conditions, the product has a shelf life of one year if the packaging is intact and unopened. Sample Methyl cedar
Column: Filling column, length m, inner diameter 3mm
QB: 1431-92
Appendix A
Type chromatographic potential diagram
(Example)
Stationary phase: SE-30:10% based on Chromosorb W.DMS60～80bZxz.net
Chromatographic oven temperature, linear program heating from 100℃ to 200℃, heating rate 2.5℃/min
Injection port, 290℃
Detector temperature, 290℃
Carrier gas flow rate, high-purity chlorine 25m1/min
Detector, hydrogen flame ionization detector
Injection volume 0.2ul
Additional remarks:
This standard was proposed by the Department of Standardization of the Ministry of Light Industry and approved by the National Flavor Standardization Center. This standard was drafted by the Material Industry Science Research Institute of the Ministry of Light Industry and Xin'anjiang Flavor Factory of Xinzhou. The main drafters of this standard are Xu Caijie, Zhu Shaohua, Qian Yunfang and Ni Xianzhong.
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