CAS #: 13472-35-0 EC Number: 231-449-2 Molar Mass: 156.00 g/mol Chemical Formula: NaH₂PO₄ * 2 H₂O Hill Formula: H₂NaO₄P * 2 H₂O Grade: Ph Eur,BP,USP,JPE,E 339

Description
Catalogue Number	106345
Synonyms	mono-Sodium orthophosphate, Sodium biphosphate, Sodium phosphate monobasic

Product Information
CAS number	13472-35-0
EC number	231-449-2
Grade	Ph Eur,BP,USP,JPE,E 339
Hill Formula	H₂NaO₄P * 2 H₂O
Chemical formula	NaH₂PO₄ * 2 H₂O
Molar Mass	156.00 g/mol
HS Code	2835 22 00
Quality Level

Physicochemical Information
Density	1.915 g/cm3 (20 °C)
Melting Point	60 °C
pH value	4.0 - 4.5 (50 g/l, H₂O, 25 °C)
Bulk density	1000 kg/m3
Solubility	850 g/l

Toxicological Information
LD 50 oral	LD50 Rat 8290 mg/kg
LD 50 dermal	LD50 Rabbit > 7940 mg/kg

Safety Information according to GHS
RTECS	WA1900500
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly 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).

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, calculated on dried substance)	98.0 - 100.5 %
Assay (alkalimetric; dried substance)	98.0 - 101.0 %
Identity	passes test
Appearance of solution	passes test
In water insoluble matter (calculated on dried substance)	≤ 0.15 %
pH-value (1 %, water)	4.1 - 4.7
pH-value (5 %; water)	4.2 - 4.5
pH-value (5.7 %; water)	4.1 - 4.5
Chloride (Cl)	≤ 0.005 %
Fluoride (F)	≤ 0.001 %
Hydrogenphosphate (HPO₄)	≤ 0.5 %
Sulfate (SO₄)	≤ 0.01 %
Heavy metals (as Pb)	≤ 0.0005 %
Al, Ca and other elements detectable with ammonia	passes test
As (Arsenic)	≤ 0.0001 %
Cd (Cadmium)	≤ 0.0001 %
Fe (Iron)	≤ 0.001 %
Hg (Mercury)	≤ 0.0001 %
Pb (Lead)	≤ 0.0001 %
Substances reducing potassium permanganate (as O)	passes test
Residual solvents (ICH Q3C)	excluded by production process
Loss on drying (130 °C)	22.0 - 24.0 %
Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*).
Corresponds to Ph Eur, BP, USP, JPE, E 339 Conforms to the purity criteria on food additives according to the current European Commission Regulation.

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