standard classification number
Standard ICS number:Chemical Technology>>Chemical Products>>71.100.40 Surfactants and other additives
Standard Classification Number:Chemical Industry>>Chemical Additives, Surfactants, Catalysts, Water Treatment Agents>>G71 Chemical Additives
Some standard content:
Chemical Industry Standard of the People's Republic of China
Accelerator·DPG
Vulcanization,
(Diphenylguanidine)
Subject content and scope of application
HG/T 234292
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for vulcanization accelerator DPC. This standard applies to the vulcanization accelerator DPG made from diphenyl sulfide, lead oxide and ammonia water in dilute ethanol medium. This standard also applies to the vulcanization accelerator DPG obtained by reacting cyanamide monomer with aniline solution to form diphenylguanidine hydrochloride and then alkali precipitation.
Trade name: Vulcanization accelerator DPG
Chemical name: Diphenylguanidine
Structural formula:
Molecular formula CIN,
Relative molecular mass: 211.27 (according to the 1989 international relative atomic mass) 2 Reference standards
GB 6678
General rules for chemical product samples
GB 11409. 1
GB 11409.4
Method for determination of melting point of rubber antioxidant and vulcanization accelerator Rubber antioxidant and vulcanization accelerator heating splashing amount determination method GB 11409. 5
Method for determination of sieve residue of rubber antioxidant and vulcanization accelerator GB 11409. 7
3 Technical requirements
Ash determination method for rubber antioxidant and vulcanization accelerator This product shall meet the technical requirements in the following table. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992 and implemented on July 1, 1993bZxz.net
Appearance (sheet test)
Initial melting point, C
Heating reduction, %
Ash content, secondary
Sieve residue (0.150rmm), %
4 Test method
4.1 Melting point determination
HG/T 2342-92
First-class product
4.1.1 According to the provisions of GB 11409.1 (electric heating melting point determination device). 4.1.2 Allowable difference:
White or charcoal white powder
The difference between two parallel determination results shall not exceed 0.5℃. The arithmetic mean is taken as the initial melting point of the sample. 4.2 Determination of heating loss
According to the provisions of GR114019.4, the sample weight is 2.8~3.2g: heating temperature is 100~105℃. 4.3 Determination of ash
According to the provisions of GB11409.7, the sample weight is 2.8~3.2g, and the ignition temperature is 800±20C. 4.4 Determination of sieve residue
Qualified products
According to the dry method provisions in CB11409.5. The standard sieve (GB6003) specification is 200tmtm×50mm/0.150mm5 Inspection rules
5.1 Vulcanization accelerator DPG should be inspected by the quality supervision and inspection department of the manufacturer, and each batch of products leaving the factory should be accompanied by a quality certificate in a certain format.
5. 2 Vulcanization accelerator DPG is a batch of uniform products packaged once. 5.3 The user has the right to inspect and accept the received products in accordance with this standard. 5.4 Sampling method
5.4.1 Take samples according to Table 2 in GB6678. Unit. 5.4.2 Use the random sampling method, use the sampling tube to take equal samples from the upper, middle and lower parts of the bag (barrel), and put them in a clean plate. 5.4.3 After mixing the samples, take out no less than 300g by quartering and put them into two clean and dry ground-mouth bottles. The bottle mouth is sealed and marked with: manufacturer name, product name, batch number, sampling date. One bottle is sent to the quality supervision and inspection department for inspection, and the other bottle is stored in a dark place for re-inspection. The shelf life is three months. 5.5 If the inspection result does not meet the requirements of this standard, samples should be taken from two times the packaging bags (barrels) for re-inspection. If the re-inspection results still do not meet the standards, the batch of products will be downgraded or rejected. 5.6 When the supply and demand parties have objections to product quality and require arbitration, the two parties can negotiate to select a testing agency and conduct arbitration analysis in accordance with the provisions of this standard.
6 Marking, packaging, transportation and storage
6.1 Marking
Each bag (barrel) should be marked with the manufacturer name, product name, trademark, grade, this standard number, batch number, net weight, and production date in a conspicuous place. 6.2 Packaging
6.2-1 Vulcanization accelerator DPG shall be packed in bags (barrels), polyvinyl chloride or polyethylene woven bags, lined with polyethylene bags, and the net weight of each bag (barrel) shall be 302
HG/T2342-92
20±0.1kg, 25±0.1kg or 40±0.1kg, etc. 6.2.2 Each batch of packaged finished products (bags and barrels) shall be accompanied by a quality certificate, which shall include the manufacturer's name, product name, grade, net weight, date of production and the number of this standard. 6.3 Transportation
During transportation, it shall be protected from rain and moisture, and handled with care during loading and unloading to avoid damage to the packaging bags (barrels): 6.4 Storage
6.4.1 The products shall be stored in a dry warehouse, at least 0.5m away from the wall; they shall not be placed near the ceiling, sewer and heating equipment to avoid moisture or deterioration. This product is flammable and must not be placed near a fire source. 6.4.2 The storage period of vulcanization accelerator DPG is 2 years. If it exceeds the storage period and meets the standards after inspection, it can still be used. Precautions for use
This product is irritating to the skin. Avoid contact with eyes and skin. Rinse thoroughly after contact with this product. 303
Liquid soil filling
Temperature range, (
Minimum scale, (
Long line scale, C
Magic mathematics. "
Full length am
Rod diameter, m
Mercury t: diameter·mmm
Mercury ball length·mm
Inoculation length, 1
Distance from the upper end of the mercury ball to the lowest scale line·mmTop shape
Allowable error, center
Additional instructions:
HG/T 2342--92
Appendix A
Specifications of melting point thermometers
(reference)
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China, and is under the jurisdiction of the Shanxi Chemical Research Institute. This standard was drafted by Shenyang Northeast Additives General Factory. The main drafter of this standard group is Ya Yaqin, Ten Card Zhen Specifications
125~150
1 (per grid)
10 (per grid)
300~320
From the date of implementation of this standard, the original chemical industry department standard HG2---470---83 accelerator D>》will be invalidated301
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