Merck 101126 0500 Ammonium Dihydrogen Phosphate Gr 500 GR.

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Description
Catalogue Number	101126
Replaces	AX1350; AX1350-1; AX1350-20
Synonyms	Ammonium biphosphate, Ammonium phosphate monobasic, Primary ammonium phosphate, Monoammonium orthophosphate

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Product Information
CAS number	7722-76-1
EC number	231-764-5
Grade	ACS,Reag. Ph Eur
Hill Formula	H₆NO₄P
Chemical formula	(NH₄)H₂PO₄
Molar Mass	115.03 g/mol
HS Code	3105 10 00
Quality Level	MQ300

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Physicochemical Information
Density	1.81 g/cm3 (20 °C)
Melting Point	190 °C
pH value	3.8 - 4.4 (50 g/l, H₂O, 25 °C)
Vapor pressure	<0.001 hPa (20 °C)
Bulk density	800 - 1100 kg/m3
Solubility	368 g/l

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Toxicological Information
LD 50 oral	LD50 Rat 5750 mg/kg
LD 50 dermal	LD50 Rabbit > 7940 mg/kg

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Safety Information according to GHS
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	14\nInorganic 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).

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

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Transport Information
Declaration (railroad and road) ADR, RID	Kein Gefahrgut
Declaration (transport by air) IATA-DGR	No Dangerous Good
Declaration (transport by sea) IMDG-Code	No Dangerous Good

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Specifications
Assay (acidimetric)	≥ 99.0 %
Insoluble matter	≤ 0.005 %
pH-value (5 %; water, 25 °C)	3.8 - 4.4
pH-value (2.3%; water)	about 4.2
Chloride (Cl)	≤ 0.0005 %
Nitrate (NO₃)	≤ 0.001 %
Sulfate (SO₄)	≤ 0.005 %
Heavy metals (as Pb)	≤ 0.0005 %
Ca (Calcium)	≤ 0.001 %
Fe (Iron)	≤ 0.001 %
K (Potassium)	≤ 0.005 %
Mg (Magnesium)	≤ 0.0005 %
Na (Sodium)	≤ 0.005 %
corresponds to ACS,Reag. Ph Eur