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Physicochemical Information
Density	1.97 g/cm3
Melting Point	100 °C
pH value	4 – 6 (50 g/l, H₂O, 20 °C)
Bulk density	800 – 1000 kg/m3
Solubility	965 g/l

Toxicological Information
LD 50 oral	LD50 Rat 1260 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H302: Harmful if swallowed. H318: Causes serious eye damage. H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s)	P264: Wash skin thoroughly after handling. P270: Do not eat, drink or smoke when using this product. P273: Avoid release to the environment. P280: Wear eye protection/ face protection. P301 + P312: IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word	Danger
RTECS	ZH5300000
Storage class	10 – 13 Other liquids and solids
WGK	WGK 3 highly hazardous to water
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
Categories of danger	harmful, irritant, dangerous for the environment

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

Transport Information
Declaration (railroad and road) ADR, RID	UN 3077 , 9, III
Declaration (transport by air) IATA-DGR	UN 3077 , 9, III
Declaration (transport by sea) IMDG-Code	UN 3077 , 9, III, Marine Pollutant: P, Segregation Group: 7 (Heavy metals and their salts (including their organometallic compounds))

Specifications
Assay (complexometric)	99.5 – 103.0 %
Identity	passes test
Appearance of solution	passes test
Insoluble matter	≤ 0.01 %
pH-value (5 %; water, 25 °C)	4.4 – 5.6
Chloride (Cl)	≤ 0.0005 %
Total nitrogen (N)	≤ 0.0005 %
Nitrate (NO₃)	≤ 0.002 %
As (Arsenic)	≤ 0.00005 %
Ca (Calcium)	≤ 0.001 %
Cd (Cadmium)	≤ 0.0005 %
Cu (Copper)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
K (Potassium)	≤ 0.001 %
Mg (Magnesium)	≤ 0.001 %
Mn (Manganese)	≤ 0.0003 %
Na (Sodium)	≤ 0.001 %
NH₄ (Ammonium)	≤ 0.001 %
Pb (Lead)	≤ 0.001 %
Corresponds to ACS, ISO, Reag. Ph Eur

Merck 108883 1000 Zinc Sulfate Heptahydrate Gr For Analysis Acs,iso 1 KG.