MERCK 106513.2500 Sodium Thiosulfate Pentahydrate Pure CAS No.10102-17-7

Key Spec Table

CAS #	EC Number	Hill Formula	Molar Mass
10102-17-7	231-867-5	Na₂O₃S₂ * 5 H₂O	248.18 g/mol

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Description
Catalogue Number	106513
Synonyms	Antichlor

Product Information
CAS number	10102-17-7
EC number	231-867-5
Hill Formula	Na₂O₃S₂ * 5 H₂O
Molar Mass	248.18 g/mol
HS Code	2832 30 20
Quality Level	MQ100

Physicochemical Information
Density	1.74 g/cm3 (20 °C)
Melting Point	48 °C
pH value	6 - 7.5 (100 g/l, H₂O, 20 °C)
Bulk density	1000 kg/m3
Solubility	701 g/l

Toxicological Information
LD 50 oral	LD50 Rat > 5000 mg/kg

Safety Information according to GHS
RTECS	WE6660000
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	28Aqueous solutions: Container D.

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Specifications
Assay (iodometric)	≥ 98.5 %
Identity	passes test
pH-value (10 %; water)	6.0 - 9.0
Sulfate and sulfite (as SO₄)	≤ 0.6 %
Ca (Calcium) and Mg (Magnesium)	≤ 0.2 %
Fe (Iron)	≤ 0.005 %
Water	32.0 - 38.0 %