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, anhydrous, 99.5-100.5% (based on anhydrous substance)
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
100 g | Please contact Customer Service for Availability | 335,00 kr |
1 kg | Please contact Customer Service for Availability | 905,00 kr |
2.5 kg | Please contact Customer Service for Availability | 2 010,00 kr |
6 x 1 kg | Please contact Customer Service for Availability | 4 430,00 kr |
25 kg | Please contact Customer Service for Availability | 6 340,00 kr |
6 x 2.5 kg | Please contact Customer Service for Availability | 8 560,00 kr |
About This Item
Quality Segment
assay
99.5-100.5% (based on anhydrous substance)
form
grit
quality
anhydrous, meets analytical specification of Ph. Eur., BP, USP
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
SMILES string
OC(=O)CC(O)(CC(O)=O)C(O)=O
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)
InChI key
KRKNYBCHXYNGOX-UHFFFAOYSA-N
Gene Information
human ... SRC(6714)
Application
1 of 1
This Item | |||
|---|---|---|---|
| description meets analytical specification of Ph. Eur., BP, USP, anhydrous, 99.5-100.5% (based on anhydrous substance) | description ACS reagent, ≥99.5% | description anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99.5% | description anhydrous, European Pharmacopoeia (EP) Reference Standard |
| assay 99.5-100.5% (based on anhydrous substance) | assay ≥99.5% | assay ≥99.5% | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level - |
| form grit | form crystals | form crystals | form - |
| solubility water: 383 g/L at 25 °C | solubility - | solubility - | solubility - |
| mp 153-159 °C (lit.) | mp 153-159 °C (lit.) | mp 153-159 °C (lit.) | mp 153-159 °C (lit.) |
| cation traces Zn: ≤10 ppm, As: ≤1 ppm, Cu: ≤10 ppm, Fe: ≤10 ppm, Ca: ≤200 ppm, Pb: ≤0.5 ppm, Hg: ≤1 ppm | cation traces Pb: ≤2 ppm, Fe: ≤3 ppm | cation traces Fe: ≤3 ppm, Pb: ≤2 ppm | cation traces - |
Still not finding the right product?
Explore all of our products under Citric acid
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
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.
-
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?
-