ASTM D3090-1972(2016) Standard Practice for Storage Testing of Aerosol Products《气溶胶制品的储藏检验的标准实施规程》.pdf

1、Designation: D3090 72 (Reapproved 2016)Standard Practice forStorage Testing of Aerosol Products1This standard is issued under the fixed designation D3090; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A

2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the storage testing of aerosolproducts.1.2 There are two major types of storage tests that may beperformed on aer

3、osol products:1.2.1 Live Storage Tests, where the valves are actuated andthe determinations are made at relatively frequent intervals (thepurpose being to simulate consumer use of aerosol dispensers),and1.2.2 Dead Storage Tests, performed to simulate warehousestorage conditions when shelf-life infor

4、mation is sought.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety conce

5、rns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. For specificprecautionary statements, see Section 4.2. Significance and Use2.1 Aer

6、osol products are subjected to storage tests to ascer-tain the shelf-life of the complete package, and to evaluate thedegree of suitability of the valve and container components fortheir intended uses.2.2 It is impractical to promulgate a standard procedure forconducting storage tests, since variati

7、ons will be necessitatedby differences in the ultimate objective (for example, theprimary interest of one test may be concerned with containersuitability or shelf-life of a new product in an existing package,while another test may be concerned with valve evaluation).2.3 It follows that storage testi

8、ng must be flexible enough toaccommodate the small procedural changes required. Thus,this recommended practice will only set forth those principlesto be observed in establishing a definite procedure, in order toallow the individual operator the prerogative of adapting theseto satisfy his particular

9、requirements.3. General Requirements3.1 Before making any aerosol storage tests, the followingshould be borne in mind:3.1.1 Sufficient test specimens should be available to re-place any that fail during the test, and to make it possible toextend the storage period if desired.3.1.2 The test schedule

10、and procedure should be wellplanned. Only if this is followed, can there be any assurancethat important developments have not been missed, and that theresults will correlate with other storage test results.3.1.3 The tests should be performed by competent personnelwell qualified in the field. Since m

11、ost of the data is not obtainedby direct measurement and is therefore not entirely objective innature, it is highly desirable to have the same operator performall of the tests on a given specimen. This, in addition to 3.1.2,will do much to minimize the effect of the human element.3.2 Before any spec

12、imens are committed to storage, thefollowing should apply:3.2.1 All pertinent background information concerning theproblem should be assembled, so that the test specimen can beintelligently set up.3.2.2 Tests should be conducted to eliminate defectivecontainers and valves (the frequency of such defe

13、cts should berecorded). To make this segregation possible, pressuredeterminations, hot bath, vial leakage, and spray tests shouldbe made on each filled dispenser.3.2.3 Conditions of filling and handling should as closely aspossible approximate those that would be encountered com-mercially.4. Safety

14、Precautions4.1 Aerosol storage tests involve a container, valve, orproduct of unknown compatibility and performance. For thisreason, serious accidents could occur. The operator shouldemploy gloves, safety shield, safety glasses, and apparatus withproper controls.4.2 If, during a test, container perf

15、orations or signs ofadvanced corrosion are found, or if the product, dispensers, or1This practice is under the jurisdiction of ASTM Committee D10 on Packagingand is the direct responsibility of Subcommittee D10.33 on Mechanical Dispensers.This practice was originally developed by the Chemical Specia

16、lties ManufacturersAssociation.Current edition approved Oct. 1, 2016. Published October 2016. Originallyapproved in 1972. Last previous edition approved in 2008 as D3090 72(2008).DOI: 10.1520/D3090-72R16.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-29

17、59. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical

18、Barriers to Trade (TBT) Committee.1valves otherwise become unmerchantable, the entire lot ofspecimens should be destroyed. Continued testing would wastetime and space, and could result in a serious accident.5. Live Storage Test5.1 Test TemperatureSpecimens should be stored at roomtemperature. In add

19、ition, a higher-temperature storage (forexample, 98F (36C) may be employed. The use of thehigher-temperature storage is particularly desirable when anew valve or product is being evaluated. The use of storagetemperatures below 32F (60C), or the alternate exposure tosubfreezing and elevated temperatu

20、res, has considerable meritin the screening of new valves or new valve materials.5.2 Test Position and Number of SpecimensIf the purposeof the test is to evaluate a valve, half of the specimens at eachstorage temperature should be kept in an inverted position. Ifthe product, or any constituent there

21、of, exerts a detrimentaleffect on the sealing material of the valve, the conditions maybe more readily observed in the case of inverted cans. Six cansinverted and six cans upright for each temperature is theminimum number of specimens for each variable that shouldbe considered. If the test involves

22、only one temperature, ten totwelve cans per variable (upright and inverted) is a moredesirable size.5.3 Test TimeThe tests are usually considered completedwhen 10 g or less of formulation remains in the containers.Extension of the tests beyond this point may cause erratic andunreliable results.5.4 E

23、xamination ScheduleExaminations of the specimensshould be made weekly, or more often if the completion of thetest in less total elapsed time is necessary.5.5 FailureIf a valve becomes totally inoperative or failsto operate properly, the container and valve should be imme-diately torn down to ascerta

24、in the cause of failure.5.6 Final ExaminationEach container and valve should becritically examined as soon as possible after the final valveactuation of the test.6. Dead Storage Test6.1 Test Temperature:6.1.1 Specimens are usually stored at 98F (36C) and roomtemperature, while other temperatures are

25、 employed in specialcases.6.1.2 Temperatures from 95 to 100F (35 to 37C) (oftenreferred to as incubation temperature) may accelerate containercorrosion and leakage, if the containers are so predisposed.However, incubated storage should always be used in conjunc-tion with room temperature since it is

26、 often difficult, if notimpossible, to predict a normal shelf-life on the basis of 98Ftests alone.6.1.3 Storage below freezing (0 to 32F (17 to 0C) isvaluable for evaluating the sealing efficiency and suitability ofthe gasket materials in aerosol valves.6.1.4 Storage at 130F (54C) should be employed

27、 when theresistance of the container to structural fatigue is to bedetermined.6.2 Test Position and Number of Specimens:6.2.1 Specimens at each storage temperature should be heldin both upright and inverted positions.6.2.2 Enough specimens should be provided for each test sothat a minimum of two dis

28、pensers of each variable from eachtemperature can be evaluated and torn down at each scheduledexamination. The other specimens remain untouched, with theexception of weighing, until they are needed at a subsequentexamination.6.2.3 A minimum of twelve extra specimens per variableshould be stored at e

29、ach temperature to allow for extension ofthe test, if this later becomes necessary, and to allow a largernumber of specimens to be inspected at the final examination.6.2.4 Thus, the minimum suggested number of specimensper product, container, or valve variable is as follows:4np41y! (1)where:y = dura

30、tion of the test, years,n = number of storage temperatures, andp = number of storage positions to be employed.6.2.5 It is usually desirable to include a glass bottle of theaerosol concentrate with the specimens, in order to determinedeteriorations that may take place that are independent of theaeros

31、ol container. One or two glass aerosol containers may alsobe included.6.2.6 It is often useful to place one or two empty metalcontainers with the specimens, especially for internally linedvariables, for possible future references.6.3 Test TimeMost dead storage tests are concluded after24 months of s

32、torage, but a test may be extended for a muchlonger period, if the previous results and the objective sorequire.6.4 Examination ScheduleExaminations are usually madeat 1, 3, and 6-month intervals, and at 6-month intervalsthereafter, until the test is completed.7. Examination7.1 The examination of th

33、e specimen may be divided intoperformance determination, container and valve inspection,and product evaluation.7.2 The performance of the complete specimen may beascertained by making mass loss, discharge rate (10 s),pressure, and possibly particle size determinations. At eachexamination, the mass l

34、oss and discharge rate should bemeasured. Internal pressure determinations at each examina-tion are usually not necessary, but it is recommended that thepressures be taken initially and two or three equally spacedtimes during the test.7.3 As a check on filling, the volatile-nonvolatile ratio maybe d

35、etermined following the examinations.7.4 After expulsion of the propellant, the product should betransferred and the container and valve carefully torn down andexamined. The metal valve parts should be carefully inspectedfor evidences of corrosion, and the rubber or plastic compo-nents should be che

36、cked for swelling, softening, or disintegra-tion. Conditions in the container interiors should then be notedwith special emphasis on any staining, detinning, rusting,D3090 72 (2016)2pitting, or other indications of corrosion that may be present.Microscopical examination of the valve and container co

37、mpo-nents is recommended, for without this assistance importantand indicative developments may be overlooked.7.5 The product from the containers should be examined forcolor change and precipitate or sludge formation. If corrosionis found or suspected in the container, it is suggested that theproduct

38、 be analyzed for the moisture, iron, and tin content.7.6 If any abnormal or undesirable conditions are found inthe performance of the valve or product, sufficient additionalspecimens of the same lot should be examined to confirm thefindings.7.7 If entomological data are required, they may be obtaine

39、dby using pertinent existing standard procedures.7.8 See Table 1 for a sample aerosol product storage test(both dead and live storage).7.9 See Appendix X1 for other tests that may be run inconjunction with an aerosol storage testing program.8. Keywords8.1 aerosol products; aerosol products storage;

40、shelf-life ofaerosol packaging; storage testing ; storage testing aerosolproductsD3090 72 (2016)3APPENDIX(Nonmandatory Information)X1. OTHER RECOMMENDED TESTSX1.1 There are several other tests that should be consideredin conjunction with an aerosol storage testing program.X1.2 In evaluating a valve

41、for a given formulation, it maybe desirable to subject the containers to a continuous dischargetest, whereby the containers are emptied in a single burst or aseries of long bursts. This procedure is very rapid, and maygive valuable clues on the suitability of the valve gasketmaterial for the product

42、. If indications of weakening,disintegration, or undue swelling of the valve gaskets are foundby means of this test, particular attention should be directed tothe results of the live storage test.X1.3 Before commercial packaging of a new product or theuse of a new container or valve is approved, it

43、is desirable toobtain certain information outside the scope of the laboratorytest:X1.3.1 Filled containers should be subjected to normalhandling, cartoning, and shipping operations to determine thesuitability of protective devices and the resistance of thecontainers and valves to shock.X1.3.2 Contai

44、ners should be shipped to and stored inwarehouses having the extremes in temperatures that could beencountered in the distribution and marketing of the product.After a predetermined storage period in the various locations,the containers should be returned to the laboratory for acomplete examination.

45、X1.4 Once commercial packaging of a product is initiated,a program may be inaugurated whereby defective or complaintdispensers encountered in the field are returned to the labora-tory. By this means, a continuous check on the quality ismaintained, and it may enable the manufacturer and packer tobe f

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