Product Information
CAS number	497-19-8
EC index number	011-005-00-2
EC number	207-838-8
Grade	Ph Eur,BP,JP,NF
Hill Formula	CNa₂O₃
Chemical formula	Na₂CO₃
Molar Mass	105.99 g/mol
HS Code	2836 20 00
Structure formula Image

Physicochemical Information
Density	2.53 g/cm3 (20 °C)
Melting Point	854 °C
pH value	11.16 (4 g/l, H₂O, 25 °C)
Bulk density	1100 kg/m3
Solubility	212.5 g/l

Toxicological Information
LD 50 oral	LD50 Rat 4090 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H319: Causes serious eye irritation.
Precautionary Statement(s)	P260: Do not breathe dust. 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
RTECS	VZ4050000
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).

Safety Information
Hazard Symbols	Irritant
Categories of danger	irritant
R Phrase	R 36 Irritating to eyes.
S Phrase	S 22-26 Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Storage and Shipping Information
Storage	Store at +2 °C to +25 °C.

Specifications
Assay (acidimetric; dried substance)	99.5 - 100.5 %
Assay (acidimetric; calculated on dried substance)	99.5 - 100.5 %
Appearance of solution	passes test
Identity	passes test
Chloride (Cl)	≤ 0.0125 %
Sulfate (SO₄)	≤ 0.0250 %
Heavy metals (as Pb)	≤ 0.0010 %
As (Arsenic)	≤ 0.00031 %
Fe (Iron)	≤ 0.0050 %
Alkali hydroxides and Alkali hydrogen carbonates	passes test
Residual solvents (ICH Q3C)	excluded by manufacturing process
Loss on drying (300 °C)	≤ 0.5 %
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,JP,NF

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Merck 106398 Sodium carbonate anhydrous EMPROVE® ESSENTIAL Ph Eur,BP,ChP,JP,NF 5 kg

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