GB/T 3729-1991 Industrial Butyl Acetate GB/T3729-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
n-Butyl acetate for industrial useSubject Content and Scope of Application
GB3729
Preferably GB3729-83
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of industrial butyl acetate. This standard applies to industrial butyl acetate prepared by esterification of acetic acid and butanol in the presence of a catalyst. Formula: CH, COC, Hg
Relative atomic mass: 116.16 (according to the 1987 national standard atomic weight) 2 Reference standards
GB 190
GB 601
Dangerous goods packaging mark
Preparation of standard solution for titration analysis (volumetric analysis) of chemical reagents GB603 Preparation of preparations and products used in test methods of chemical reagents General rules for sampling of liquid chemical products
GB 6680
GB/T12717T Test method for industrial acetate esters 3 Technical requirements
3.1 Appearance: transparent liquid, without sensible floating impurities. 3.2 Industrial butyl acetate shall meet the requirements of the following table: Index
Indicator name
Chroma (platinum-diamond color number). No.
Density Puo+B/cmbzxz.net
Butyl acetate, %
Moisture·%
Acidity (in CH, COOH), %
Evaporation residue, %
4 Test method
Superior product
0.878-~0.883
4.1 Chroma
Adopt the colorimetric determination method specified in GB/T12717. National Technical Supervision Department 1991-02-04 approved standard
0. 878~0. 883
Qualified products
D. $76--0. 883
1992-02-01 implementation
GB 3729-91
Allowable error: Take the arithmetic mean of the two test results as the test result, and the difference between the two parallel test results shall not be greater than 2. 4.2 Density
Use the density determination method (Weihe balance method) specified in GB/T12717. Allowable error: Take the arithmetic mean of the two test results as the test result, and the difference between the two parallel test results shall not be greater than 0.0005/cm.
4. 3 Determination of butyl acetate content
Use the gas chromatography method specified in GB/T12717. 4.4 Moisture
Use the gas chromatography method specified in GB/T 12717. 4.5 Acidity
Use the acidity determination method specified in GB/T12717. The allowable difference is the arithmetic mean of the two determination results as the test result. The difference between the two parallel test results shall not be greater than 0.001%. 4.6 Evaporation residue
Use the evaporation residue determination method specified in GB/T12717. 5 Inspection rules
5.1 This product shall be inspected by the quality inspection department of the manufacturer. The manufacturer shall ensure that all indicators of the products shipped meet the requirements of this standard and attach a quality certificate in a fixed format.
5.2 Product sampling shall be carried out in accordance with the provisions of GB6680. Use a clean and dry corrugated glass sampling tube to take out a uniform sample from each barrel, with a total volume of not less than 1000mL, collect it in a clean and dry ground-mouth bottle, mix it, and put it in two clean and dry ground-mouth bottles respectively. One bottle is inspected, and the other bottle is sealed and kept for inspection. Label the bottle with the manufacturer's name, product name, batch number, specification, sampling date, and sampler. 5.3 If one of the indicators in the inspection results meets the requirements of this standard, it should be re-sampled from twice the amount of packaging containers for re-inspection. If the results are still unqualified, the entire batch of products cannot be accepted. 5.4 The receiving unit has the right to accept the product in accordance with the provisions of this standard (valid for three months from the date of leaving the factory). 5.5 Evaporation residue is a quality assurance indicator. During normal production, the manufacturer will conduct a random inspection once every half month. 6 Marking, packaging, transportation and storage
6.1 Marking The packaging container should be painted with a solid mark indicating the manufacturer's name, batch number, product name, gross weight, net weight, production date, standard number and the "flammable liquid" mark in GB190. 6.2 Packaging The product should be packed in a clean, dry and firm iron barrel. The barrel mouth should be sealed with a sealing ring. The net weight of each barrel is 160kg. 6.3 Transportation Transportation and loading and unloading must be carried out in accordance with the regulations on the transportation of dangerous goods. Pat and place gently to avoid damage and accidents. 6.4 Storage Butyl acetate should be stored in a cool, ventilated and dry place. Additional remarks:
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Beijing Chemical Industry Research Institute of the Ministry of Chemical Industry. This standard was drafted by Beijing Huahuilan Factory.
The main drafters of this standard are Wen Xiaru, Jia Wenlan and Zhao Tongsheng. The technical indicators of this standard refer to the Soviet national standard 1OC.T8981--78 (85) "Technical Specifications for Industrial Ethyl Ethyl Acetate and Butyl Acetate".
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