If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
27109
Citric acid
meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)
Select a Size
R 718.34
R 1,552.32
R 3,597.58
R 6,589.52
R 13,958.14
About This Item
Skip To
Product Name
Citric acid, meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)
InChI key
KRKNYBCHXYNGOX-UHFFFAOYSA-N
InChI
1S/C6H8O7/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)
SMILES string
OC(=O)CC(O)(CC(O)=O)C(O)=O
assay
99.5-100.5% (based on anhydrous substance)
form
grit
quality
anhydrous
meets analytical specification of Ph. Eur., BP, USP, E330
expl. lim.
8 %, 65 °F
impurities
residual solvents, complies
≤0.0005% heavy metals (as Pb)
≤0.5% water (Karl Fischer)
ign. residue
≤0.05% (as SO4)
pKa
(1) 3.13, (2) 4.76, (3) 6.4
mp
153-159 °C (lit.)
solubility
water: 383 g/L at 25 °C
anion traces
chloride (Cl-): ≤50 ppm
oxalate (as oxalic acid): ≤100 ppm
sulfate (SO42-): ≤100 ppm
cation traces
As: ≤1 ppm
Ca: ≤200 ppm
Cu: ≤10 ppm
Fe: ≤10 ppm
Hg: ≤1 ppm
Pb: ≤0.5 ppm
Zn: ≤10 ppm
suitability
complies for appearance of solution
complies for reaction against H2SO4
Quality Level
Gene Information
human ... SRC(6714)
Looking for similar products? Visit Product Comparison Guide
Related Categories
1 of 4
This Item | 1.00241 | 791725 | 1.37002 |
|---|---|---|---|
| assay 99.5-100.5% (based on anhydrous substance) | assay 99.5-100.5% substance (anhydrous) basis (alkalimetric) | assay ≥99.5% | assay 99.5-100.5% substance (anhydrous) basis (alkalimetric) |
| Quality Level 200 | Quality Level 500 | Quality Level 200 | Quality Level 500 |
| form grit | form fine powder | form crystals | form fine powder, solid |
| solubility water: 383 g/L at 25 °C | solubility 1330 g/L | solubility - | solubility water: 1330 g/L at 20 °C |
| cation traces As: ≤1 ppm, Cu: ≤10 ppm, Hg: ≤1 ppm, Zn: ≤10 ppm, Ca: ≤200 ppm, Pb: ≤0.5 ppm, Fe: ≤10 ppm | cation traces Al: ≤0.2 ppm, As: ≤1 ppm, Hg: ≤1 ppm, Pb: ≤0.5 ppm, heavy metals (as Pb): ≤5 ppm | cation traces Fe: ≤3 ppm, Pb: ≤2 ppm | cation traces Al: ≤0.2 ppm, Fe: ≤3 ppm, Pb: ≤2 ppm, heavy metals (as Pb): ≤10 ppm |
| impurities residual solvents, complies, ≤0.5% water (Karl Fischer), ≤0.0005% heavy metals (as Pb) | impurities - | impurities Substances carbonizable by hot sulfuric acid, passes test | impurities - |
Application
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Articles
Analyze Xiaoer Chiqiao Qingre granules for geniposide and forsythin using Discovery® HS C18 column and Supelclean™ LC-Alumina-N SPE.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-
-
Regarding Citric Acid (Product Number: 27109, Batch Number: STBL2004), confirm if it is a primary or secondary standard. Additionally, if it is a secondary standard, confirm the batch number of the primary traceability standard.
1 answer-
This product is not considered an analytical standard. It meets the analytical specifications of the European, British, and United States Pharmacopeia, but is neither a primary nor secondary standard. It is intended for use in general research applications. See the links below to review additional products that may be of interest:
1134369, USP reference standard
https://www.sigmaaldrich.com/product/usp/1134368A1202000, EP reference standard
https://www.sigmaaldrich.com/product/sial/a120200094676, Secondary reference standard, traceable to NIST/NMIJ
https://www.sigmaaldrich.com/product/sial/94676Helpful?
-
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service