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LC5231 tri-Sodium phosphate dodecahydrate

suitable for use as excipient


Order number Packaging Quantity Price €
AC32231 Plastic bottle 5 kg inquire
AC32231 Double PESack 25 kg inquire


Product information
Synonyms Sodium phosphate tribasic, Trisodium phosphate
Hill Formula Na3O4P * 12 H2O
Chemical formula Na3PO4 * 12 H2O
HS Code 2835 29 30
EC number 231-509-8
Molar mass 380.18 g/mol
CAS number 10101-89-0


Chemical and physical data
Solubility 285 g/l (20 °C)
Melting point ca.75 °C Elimination of water of crystallisation
Molar mass 380.18 g/mol
Density 1.62 g/cm3 (20 °C)
Bulk density 950 kg/m3
pH value 12 (10 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H319: Causes serious eye irritation.
H315: Causes skin irritation.
Precautionary Statement(s) P302 + P352: IF ON SKIN: Wash with plenty of soap and 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.
Signal Word Warning
Hazard Pictogram(s)

RTECS TC9575000
Storage class 10 – 13 Other liquids and solids
WGK WGK 1 slightly water endangering
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
R Phrase R 36/38
Irritating to eyes and skin.
Categories of danger irritant
Hazard Symbol Irritant


Transport information
Declaration (transport by sea) IMDG-Code No Dangerous Good
Declaration (transport by air) IATA-DGR No Dangerous Good


Toxicological data
LD 50 oral LD50 rat 7400 mg/kg


Identity passes test
Assay (alkalimetric, calculated on calcined substance) ≥ 93.5 %
Free alkali (as NaOH) ≤ 2.5 %
In water insoluble matter (calculated on dried substance) ≤ 0.2 %
pH-value (1 %, water) 11.5 – 12.5
Fluoride (F) ≤ 0.001 %
Heavy metals (as Pb) ≤ 0.001 %
As (Arsenic) ≤ 0.00005 %
Cd (Cadmium) ≤ 0.0001 %
Hg (Mercury) ≤ 0.0001 %
Pb (Lead) ≤ 0.0004 %
Loss on ignition (800 °C) 45.0 – 57.0 %
Residual solvents (USP/ICH) excluded by production process
Residues of metal catalysts or metal reagents acc. to EMEA/CHMP/SWP/4446/2000 are not likely to be present.
corresponds to NF, E 339