پتاسیم سدیم تارتارات تتراهیدرات 108087 مرک

Description
Catalogue Number	108087
Replaces	PX1590; PX1590-1; PX1590-2; PX1590-5; PX1590-11;
Synonyms	Sodium potassium tartrate, Tartaric acid potassium sodium salt

Product Information
CAS number	6381-59-5
EC number	206-156-8
Grade	ACS,ISO,Reag. Ph Eur
Hill Formula	C₄H₄KNaO₆ * 4 H₂O
Molar Mass	282.23 g/mol
HS Code	2918 13 00
Structure formula Image

Applications
Application	Potassium sodium tartrate tetrahydrate for analysis EMSURE® ACS,ISO,Reag. Ph Eur. CAS 6381-59-5, pH 7.0 - 8.5 (50 g/l, H₂O, 25 °C).

Physicochemical Information
Melting Point	70 - 80 °C
pH value	7.0 - 8.5 (50 g/l, H₂O, 25 °C)
Bulk density	1000 kg/m3
Solubility	630 g/l

Safety Information according to GHS
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly water endangering
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Storage and Shipping Information
Storage	Store at +5°C to +30°C.

Specifications
Assay (alkalimetric)	99.0 - 102.0 %
Insoluble matter	≤ 0.005 %
pH-value (5 %; water; 25 °C)	7.0 - 8.5
Chloride (Cl)	≤ 0.0005 %
Phosphate (PO₄)	≤ 0.001 %
Sulphate (SO₄)	≤ 0.005 %
Heavy metals (as Pb)	≤ 0.0005 %
Ca (Calcium)	≤ 0.004 %
Cu (Copper)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
NH₄ (Ammonium)	≤ 0.002 %
Pb (Lead)	≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur