1.00244
Citric acid monohydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
2-Hydroxypropane-1,2,3-tricarboxylic acid, Hydroxytricarballylic acid
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About This Item
grade
ACS reagent
Quality Level
agency
reag. ISO, reag. Ph. Eur.
vapor pressure
<1 Pa ( 25 °C)
product line
EMSURE®
assay
99.5-100.5% anhydrous basis (acidimetric)
form
solid
potency
3000 mg/kg LD50, oral (Rat)
composition
Water, 7.5-8.8% Karl Fischer
impurities
≤200 ppm Sulfated ash, ≤50 ppm In water insoluble matter
color
clear, white to almost white
pH
1.85 (25 °C, 50 g/L in H2O)
pKa
(1) 3.13, (2) 4.76, (3) 6.4
mp
135-152 °C
transition temp
flash point 173.9 °C
solubility
880 g/L
density
1.54 g/cm3 at 20 °C
bulk density
800‑1000 kg/m3
anion traces
chloride (Cl-): ≤5 ppm, oxalate (as oxalic acid): ≤50 ppm, phosphate (PO43-): ≤10 ppm, sulfate (SO42-): ≤20 ppm
cation traces
Al: ≤0.2 ppm, As: ≤1 ppm, Cu: ≤5 ppm, Fe: ≤3 ppm, Hg: ≤1 ppm, Pb: ≤0.5 ppm, heavy metals (as Pb): ≤5 ppm
storage temp.
2-30°C
SMILES string
OC(CC(O)(C(O)=O)CC(O)=O)=O.O
InChI
1S/C6H8O7.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);1H2
InChI key
YASYEJJMZJALEJ-UHFFFAOYSA-N
Application
- Biopolymeric Blends of Thermoplastic Starch and Polylactide as Sustainable Packaging Materials: This publication uses citric acid monohydrate in the synthesis of biodegradable polymers, highlighting its utility in developing sustainable materials within the industrial manufacturing and environmental sectors (Jozinović A et al., 2024).
Analysis Note
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 %
Corresponds to ACS, ISO 6353/2, Reag. Ph. Eur.
Other Notes
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
flash_point_f
345.0 °F - closed cup
flash_point_c
173.9 °C - closed cup
Certificates of Analysis (COA)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1002441000 | 04022536003429 |
| 1002445000 | 04022536003443 |
| 1002449012 | 04027269677732 |
| 1002440500 | 04022536003405 |
| 1002449026 | 04022536646008 |