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USGS Spectral Library Version 7 Sample Description

Kokaly, R.F., Clark, R.N., Swayze, G.A., Livo, K.E., Hoefen, T.M., Pearson, N.C., Wise, R.A., Benzel, W.M., Lowers, H.A., Driscoll, R.L., and Klein, A.J., 2017, USGS Spectral Library Version 7: U.S. Geological Survey Data Series 1035, 61 p., https://doi.org/10.3133/ds1035
For more information on the library, see: local link web link

TITLE: Potassium_Sulfate JT1-3282 DESCRIPT

DOCUMENTATION_FORMAT: Man_Made

SAMPLE_ID: Potassium sulfate, powder

MATERIAL_TYPE:

MATERIAL: Potassium sulfate

FORMULA: K2SO4

FORMULA_HTML: K2SO4

COLLECTION_LOCALITY: Purchased from J.T. Baker

COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)

COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)

DATUM: Not Available # coordinate datum

ORIGINAL_DONOR: Roger Clark

CURRENT_SAMPLE_LOCATION: USGS Spectroscopy Lab, Denver, CO

ULTIMATE_SAMPLE_LOCATION:USGS Spectroscpy Lab, Denver, CO

SAMPLE_DESCRIPTION: White granules or powder

Other Names: Sulfuric acid dipotassium salt, Dipotassium sulfate

CAS #: 7778-80-5

J.T. Baker Product #: 3282-01

J.T. Baker Lot #: 720140

J.T. Baker Analysis

Assay (K2SO4): 99.6%

Insoluble Matter: 0.001%

pH of 5% solution at 25 oC: 6.0

Chloride (Cl): <0.001%

Calcium, Magnesium and R2O3 precipitate: 0.008%

Sodium (Na): 0.002%

Trace Impurities: Nitrogen Compounds (as N) <5 ppm, Arsenic (As) <0.5 ppm, Heavy Metals (as Pb) <5 ppm, Iron (Fe) <5 ppm

IMAGE_OF_SAMPLE: Not Available

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: Analysis done by Sigma Aldrich, The Certificate of Analysis can be found on the Sigma Aldrich Website using the Product and Lot Numbers.

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns