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MERCK 105107 Potassium disulfate (Potassium pyrosulfate) for analysis EMSURE® ACS. CAS 7790-62-7, pH 0.8 (50 g/l, H₂O, 20 °C)

MERCK 105107 Potassium disulfate (Potassium pyrosulfate) for analysis EMSURE® ACS. CAS 7790-62-7, pH 0.8 (50 g/l, H₂O, 20 °C)

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105107.1000

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Description
Catalogue Number	105107
Replaces	PX1581; PX1581-1; PX1581-3; PX1581-20; PX1581-5W; PX1581-5
Synonyms	Potassium pyrosulfate

Product Information
CAS number	7790-62-7
EC number	232-216-8
Grade	ACS
Hill Formula	K₂O₇S₂
Molar Mass	254.33 g/mol
HS Code	2833 29 80

Applications
Application	Potassium disulfate (Potassium pyrosulfate) for analysis EMSURE® ACS. CAS 7790-62-7, pH 0.8 (50 g/l, H₂O, 20 °C).

Physicochemical Information
Melting Point	325 °C
pH value	0.8 (50 g/l, H₂O, 20 °C)
Bulk density	830 kg/m3

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H314: Causes severe skin burns and eye damage. H331: Toxic if inhaled.
Precautionary Statement(s)	P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word	Danger
Storage class	6.1 D Non combustible, acute toxicity cat. 3 / toxic or substances with chronic effects
WGK	WGK 1 slightly water endangering
Disposal	14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

Safety Information
R Phrase	R 23-35 Toxic by inhalation.Causes severe burns.
S Phrase	S 45-36/37/39-26 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Wear suitable protective clothing, gloves and eye/face protection.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Storage and Shipping Information
Storage	Storage temperature: no restrictions.

Transport Information
Declaration (railroad and road) ADR, RID	UN 2923 , 8 (6.1), I
Declaration (transport by air) IATA-DGR	UN 2923 , 8 (6.1), I
Declaration (transport by sea) IMDG-Code	UN 2923 , 8 (6.1), I, Segregation Group: 1 (Acids)

Specifications
Assay (acidimetric, as K₂S₂O₇)	97.5 - 100.0 %
Acidity (as H₂SO₄)	37.5 - 38.6 %
Insoluble and by ammoniumhydroxide precipitated matter	≤ 0.01 %
Chloride (Cl)	≤ 0.0005 %
Phosphate (PO₄)	≤ 0.001 %
Total nitrogen (N)	≤ 0.002 %
Heavy metals (as Pb)	≤ 0.001 %
Al (Aluminium)	≤ 0.001 %
As (Arsenic)	≤ 0.0005 %
Ca (Calcium)	≤ 0.002 %
Fe (Iron)	≤ 0.0005 %
Mg (Magnesium)	≤ 0.0005 %
Na (Sodium)	≤ 0.01 %
Water (H₂O)	≤ 2.5 %
Conforms ACS.

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MERCK 105107 Potassium disulfate (Potassium pyrosulfate) for analysis EMSURE® ACS. CAS 7790-62-7, pH 0.8 (50 g/l, H₂O, 20 °C)

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