HG/T 2546-1993 Heat transfer oil-400 (biphenyl-biphenyl ether mixture) HG/T2546-1993 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2546—93
Heat transfer oil 400
(Biphenyl-biphenyl ether mixture)
Issued on September 25, 1993
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1994
W Chemical Industry Standard of the People's Republic of China
Heat transfer oil 400
(Biphenyl-biphenyl ether mixture)
Subject content and scope of application
HG/T2546—93
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of heat transfer oil 400 (biphenyl-biphenyl ether mixture).
This standard applies to the eutectic mixture of biphenyl and biphenyl ether, with the mass ratio of biphenyl to biphenyl ether being 26.5:73.5. This product is mainly used as a high-temperature heat transfer fluid. Average relative molecular mass: 165.97 (according to the international relative atomic mass in 1989) 2 Reference standards
GB265 Determination of kinematic viscosity and calculation method of dynamic viscosity of petroleum products Method of expressing and judging limit values ​​GB1250
GB/T4472
GB/T6283
GB/T6678
GB/T6680
GB/T7533
GB/T7534
3 Technical requirements
General rules for determination of density and relative density of chemical products Determination of water content in chemical products Karl Fischer method (general method) General rules for sampling of chemical products
General rules for sampling of liquid chemical products
Test method for crystallization point of organic chemical products Determination of boiling range of volatile organic liquids for industrial use 3.1 Appearance: Pale yellow transparent oily liquid at room temperature. 3.2 Heat transfer oil 400 (biphenyl-biphenyl ether mixture) should meet the requirements of the following table: Item
Density p20, g/cm3
Crystallization point, ℃
Water content, %
Distillation range (0℃, 101.325kPa)
Temperature range of distillation volume 95% (V/V), ℃ Viscosity 20, mPa·s
Superior product approved by the Ministry of Chemical Industry of the People's Republic of China on September 25, 1993
256.5~ 258.0
1.060~1.064
255.0~258.0
4.0～~4.4bzxZ.net
Qualified products
253.0~258.0
1994-07-01 implementation
W.4 Test method
4.1 Determination of density
HG/T2546-93
According to the Weiss balance method in Article 2.3.2 of GB/T4472. The arithmetic mean of the results of two parallel determinations is taken as the determination result, and the difference between the results of two parallel determinations shall not exceed 0.0005g/cm. 4.2 Determination of crystallization point
According to the provisions of GB/T7533.
Take the arithmetic mean of the results of two parallel determinations as the determination result, and the difference between the two parallel determination results shall not be greater than 0.08℃. 4.3 Determination of moisture
Weigh about 2g of sample, accurate to 0.001g, and carry out according to GB/T6283. Take the arithmetic mean of the results of two parallel determinations as the determination result, and the difference between the two parallel determination results shall not be greater than 0.002%. 4.4 Determination of distillation range
4.4.1 Instrument
a. Main thermometer: glass mercury thermometer, indicating range 240℃～265℃, full immersion type, graduation value 0.1℃; b. Auxiliary thermometer: glass mercury thermometer, indicating range 0℃～100℃, graduation value 1℃; c. Air condenser: glass tube with a total length of 500mm. 4.4.2 Analysis steps
Carry out according to the provisions of GB／T7534.
4.5 Determination of viscosity
Perform according to GB265.
5 Inspection rules
5.1 Heat transfer oil 400 (biphenyl-biphenyl ether mixture) shall be inspected by the quality supervision department of the manufacturer. The manufacturer shall ensure that all technical indicators of all products shipped meet the requirements of this standard and be accompanied by a quality certificate, the contents of which include: product name, product grade, product batch number, net weight, date of shipment and this standard number. 5.2 Sampling shall be carried out in accordance with Article 6.6 of GB/T6678 and Article 2.1.3 of GB/T6680. The total volume of the sample shall not be less than 1000mL. After being fully mixed, it shall be divided into 2 clean and dry brown ground-mouth bottles, labeled with the product name, batch number, sampling date and name of the sampler. One bottle shall be used for inspection and the other bottle shall be kept for 2 months for future reference. 5.3 The test results shall be determined according to the rounded value comparison method in GB1250. If one of the indicators in the test results does not meet the requirements of this standard, samples shall be taken from the twice-sized packaging for re-testing. Even if only one indicator does not meet the requirements of this standard, the whole batch of products shall be deemed unqualified.
5.4 The user unit has the right to inspect and accept the quality of the received products according to the technical requirements and test methods specified in this standard. When the supply and demand parties have objections to the product quality, they shall negotiate to resolve the issue. 5.5 The barreled products are packaged once as a batch, and the tank trucks are loaded with each tank truck as a batch. 6 Marking, packaging, transportation and storage
6.1 The packaging container of heat transfer oil 400 (biphenyl-biphenyl ether mixture) should be painted with a firm mark, which includes the manufacturer's name, product name, batch number, product net weight, trademark, production date and this standard number. 6.2 Heat transfer oil 400 (biphenyl-biphenyl ether mixture) should be packed in firmly sealed, clean and dry iron barrels, with a net weight of 200kg per barrel. 6.3 Heat transfer oil 400 (biphenyl-biphenyl ether mixture) should be stored in a ventilated and dry place indoors, and avoid violent impact during transportation to prevent leakage.
W.bzsoso.coIAdditional instructions:
HG/T2546-93
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Beijing Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Suzhou Chemical Pesticide Group Co., Ltd. The main drafter of this standard is Zhang Boying.
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