Citric acid monohydrate
SIAL/C1909 - ACS reagent, ≥99.0%
Synonym: 2-
CAS Number: 5949-29-1
Empirical Formula (Hill Notation): C6H8O7 · H2O
Molecular Weight: 210.14
EC Number: 201-069-1
MDL Number: MFCD00149972
Linear Formula: HOC(COOH)(CH2COOH)2 · H2O
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: C1909-500G
This image depicts SKU: C1909-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: C1909-1KG
This image depicts SKU: C1909-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: C1909-2.5KG
This image depicts SKU: C1909-2.5KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: C1909-25G
This image depicts SKU: C1909-25G
| anion traces | chloride (Cl-): ≤0.001% |
| oxalate (C2O42-): passes test (limit about 0.05%) | |
| phosphate (PO43-): ≤0.001% | |
| sulfate (SO42-): ≤0.002% | |
| assay | ≥99.0% |
| cation traces | Fe: ≤3 ppm |
| Pb: ≤2 ppm | |
| form | powder |
| grade | ACS reagent |
| ign. residue | ≤0.02% |
| impurities | Substances carbonizable by hot sulfuric acid, passes test |
| ≤0.005% Insoluble matter | |
| InChI | 1S/C6H8O7.H2O/c7-3(8)1-6( |
| InChI key | YASYEJJMZJALEJ-UHFFFAOYSA |
| pKa | (1) 3.13, (2) 4.76, (3) 6.4 |
| Quality Level | 200  |
| SMILES string | OC(CC(O)(C(O)=O)CC(O)=O)= |
| solubility | H2O: 59.2 % (w/w) at 20 °C (Citric acid in water) |
| H2O: 84.0 % (w/w) at 100 °C (Citric acid in water) | |
| H2O: soluble 54 % (w/w) at 10 °C (Citric acid in water) |
| Application: | Citric acid monohydrate was used in the preparation of citric acid solution employed in the acetone method of 68Ga pre-purification and radiolabeling technique. It may be used: • As release-modifying agent to improve the release of diltiazem hydrochloride from melt extruded Eudragit RS PO tablets. • To prepare citrate buffer for use in the preparation of platelets for intravital microscopy. • To prepare Tris-citrate buffer employed for the electrophoresis of bacterial enzymes. |
| General description: | Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061±123)Jmol-1. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. An investigation of its crystal growth kinetics indicates that growth is linearly dependent on size. Citric acid monohydrate is an organic weak acid used as a natural preservative in food and beverage products. |
| Packaging: | 1, 2.5 kg in poly bottle |
| Packaging: | 12 kg in poly drum |
| Packaging: | 25, 500 g in poly bottle |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H319 |
| Precautionary statements | P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 36 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | 345.0 °F |
| Flash Point(C) | 173.9 °C |
| Purity | ≥99.0% |
| UNSPSC | 12352100 |