Citric acid monohydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. for analysis, Supelco®

Supplier: Merck
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Synonyms: Hydroxytricarballylic acid2-Hydroxy-1,2,3-propanetricarboxilic acid

M-Clarity™ quality level = MQ300

1.00244.0500EA 77.3 EUR
1.00244.0500 1.00244.9026 1.00244.1000 1.00244.5000
Citric acid monohydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. for analysis, Supelco®
Citric acid monohydrate

Certifications: Corresponds to ACS, ISO 6353/2, Reag. Ph. Eur.

Formula: C₆H₈O₇.H₂O
MW: 210,14 g/mol
Melting Pt: 135…152 °C
Density: 1,552 g/cm³ (20 °C)
Flash Pt: 173,9 °C (closed cup)
Storage Temperature: Ambient
MDL Number: MFCD00149972
CAS Number: 5949-29-1
EINECS: 201-069-1
Merck Index: 13,02350
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Specification Test Results

Assay (acidimetric, calc. on anhydrous substance) 99.5 - 100.5 %
Identity (IR-spectrum) passes test
Appearance white to almost white or colorless crystals
Appearance of solution (200 g/l; water) clear (≤ 3 NTU) and not more intense in color than reference solution Y₇, BY₇ or GY₇
In water insoluble matter ≤ 50 ppm
Chloride (Cl) ≤ 5 ppm
Phosphate (PO₄) ≤ 10 ppm
Sulphate (SO₄) ≤ 20 ppm
Heavy metals (as Pb) ≤ 5 ppm
Al (Aluminium) ≤ 0.2 ppm
As (Arsenic) ≤ 1 ppm
Hg (Mercury) ≤ 1 ppm
Cu (Copper) ≤ 5 ppm
Fe (Iron) ≤ 3 ppm
Fe (Iron, acc. to Reag. Ph  Eur.) suitable to use in the limit test for iron
Pb (Lead) ≤ 0.5 ppm
Oxalates (as C₂H₂O₄) ≤ 50 ppm
Readily carbonisable substance passes test
Sulfated ash ≤ 200 ppm
Water (according to Karl Fischer) 7.5 - 8.8 %

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