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Description
Catalogue Number	101154
Replaces	AX1285-1; AX1285; AX1285-3; AX1285-20
Synonyms	Ammonium citrate dibasic, Diammonium hydrogen citrate
Description	di-Ammonium hydrogen citrate

Physicochemical Information
Density	1.48 g/cm3 (20 °C)
Melting Point	174 – 176 °C (decomposition)
pH value	4.3 (23 g/l, H₂O, 20 °C)
Bulk density	400 – 600 kg/m3

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H315: Causes skin irritation. H319: Causes serious eye irritation.
Precautionary Statement(s)	P264: Wash skin thoroughly after handling. P280: Wear protective gloves/ eye protection/ face protection. P302 + P352: IF ON SKIN: Wash with plenty of water. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P332 + P313: If skin irritation occurs: Get medical advice/ attention. P337 + P313: If eye irritation persists: Get medical advice/ attention.
Signal Word	Warning
Storage class	10 – 13 Other liquids and solids
WGK	WGK 3 highly hazardous to water
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.

Safety Information
Categories of danger	irritant

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

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

Specifications
Assay (alkalimetric)	99.0 – 102.0 %
Insoluble matter	≤ 0.005 %
pH-value (0.1 mol/L)	3.3 – 5.3
Chloride (Cl)	≤ 0.0005 %
Oxalate (C₂O₄)	passes test (Limit about 0.05 %)
Phosphate (PO₄)	≤ 0.0005 %
Total sulfur (as SO₄)	≤ 0.005 %
Heavy metals (as Pb)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
Residue on ignition (as sulfate)	≤ 0.01 %
Corresponds to ACS,Reag. Ph Eur

Merck 101154 0500 Di-Ammonium Hydrogen Citrate Gr For Analysis Acs 500 GR.