The purpose of this standard is to provide purchasers, manufacturers, and suppliers with minimum requirements for sodium tripolyphosphate (material), including physical, chemical, sampling, packaging, shipping, and testing requirements.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | Foreword I.\tIntroduction. I.A.\tBackground.\u2003Sodium tripolyphosphate (Na5P3O10) is a manufactured product obtained by combining a comparatively pure chemical\u2014soda ash (Na2CO3) or caustic soda (NaOH)\u2014with phosphoric acid (H3PO4). The resultant product is subjected to controlled condi I.B.\tHistory.\u2003The first edition of ANSI\/AWWA B503 was developed by the AWWA Committee on Scale and Corrosion-Control Chemicals. It was first published in 1978. Subsequent revisions were approved by the AWWA Board of Directors in 1984, 1989, 1994, 2001, 20 I.C.\tAcceptance.\u2003In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | II.\tSpecial Issues. II.A.\tStorage and Handling Precautions.\u2003Sodium tripolyphosphate is slightly hygroscopic and must be stored under dry conditions. Exposure to humidity produces a caked condition and accelerates reversion to orthophosphate. This results in poor flow and cak <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | III.\tUse of This Standard.\u2003It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. III.B.\tModification to Standard.\u2003Any modification of the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV.\tMajor Revisions.\u2003Major changes made to the standard in this revision include the following: <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | V.\tComments.\u2003If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standards@awwa.org. <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | AWWA Standard SECTION 1:\u2002GENERAL Sec.\u20021.1\tScope Sec.\u20021.2\tPurpose Sec.\u20021.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | SECTION 2:\u2002REFERENCES SECTION 3:\u2002DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | SECTION 4:\u2002REQUIREMENTS Sec.\u20024.1\tPhysical Requirements* <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Table 1\tApproximate bulk density of granular sodium tripolyphosphate Sec.\u20024.2\tChemical Requirements <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Sec.\u20024.3\tImpurities\u2021 SECTION 5:\u2002VERIFICATION Sec.\u20025.1\tSampling <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Sec.\u20025.2\tTest Procedures <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Sec.\u20025.3\tNotice of Nonconformance <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Sec.\u20026.2\tPackaging and Shipping <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Sec.\u20026.3\tAffidavit of Compliance or Certified Analysis <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA B503-23 Sodium Tripolyphosphate<\/b><\/p>\n |