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ASTM C146 - 21

Standard Test Methods for Chemical Analysis of Glass Sand

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Edition date: 2021-06-01
In Force
Available languages: English
Summary:

Keywords: chemical analysis; glass sand; referee analysis; routine analysis ;
Scope:

1.1 These test methods cover the chemical analysis of glass sands. They are useful for either high-silica sands (99 % + silica (SiO2)) or for high-alumina sands containing as much as 12 to 13 % alumina (Al2O3). Generally nonclassical, these test methods are rapid and accurate. They include the determination of silica and of total R2O3  (see 11.2.4), and the separate determination of total iron as iron oxide (Fe2O3), titania (TiO2), chromium oxide (Cr2O3), zirconia (ZrO2), and ignition loss. Included are procedures for the alkaline earths and alkalies. High-alumina sands may contain as much as 5 to 6 % total alkalies and alkaline earths. It is recommended that the alkalies be determined by flame photometry and the alkaline earths by absorption spectrophotometry.

1.2 These test methods, if followed in detail, will provide interlaboratory agreement of results.

Note 1: For additional information, see Test Methods C169 and Practices E50.

1.3 These test methods appear in the following order:

Procedures for Referee Analysis:

Section

 

 

 Silica (SiO2)—Double Dehydration

10

 Total R2O3—Gravimetric

11

 Fe2O3, TiO2, ZrO2, Cr2O3, by Photometric Methods and
  Al2O3 by Complexiometric Titration

12 – 17

 Preparation of the Sample for Determination of Iron
  Oxide, Titania, Alumina, and Zirconia

12

 Iron Oxide (as Fe2O3) by 1,10-Phenanthroline Method

13

 Titania (TiO2) by the Tiron Method

14

 Alumina (Al2O3) by the CDTA Titration Method

15

 Zirconia (ZrO2) by the Pyrocatechol Violet Method

16

 Chromium Oxide (Cr2O3) by the 1,5-Diphenylcarbo-
  hydrazide Method

17

 

 

Procedures for Routine Analysis:

 

 

 

 Silica (SiO2)—Single Dehydration

19

 Al2O3, CaO, and MgO—Atomic Absorption Spec-
  trophotometry

20–25

 Na2O and K2O—Flame Emission Spectrophotometry

26-27

 Loss on Ignition (LOI)

28

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS: 81.040.10-Raw materials and raw glass
CTN: C14.02 - C14.02

Standards Cancellations

Anula a C0146-94AR14

Otras Relaciones

Es referenciada por C0169-16R22

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