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
251275
Acido citrico
ACS reagent grade, ≥99.5%, crystals
Sinonimo/i:
2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid
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CHF 46.20
CHF 49.50
CHF 82.50
CHF 156.00
CHF 284.00
CHF 800.00
Informazioni su questo articolo
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Nome del prodotto
Acido citrico, ACS reagent, ≥99.5%
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
grade
ACS reagent
assay
≥99.5%
form
crystals
expl. lim.
8 %, 65 °F
impurities
Substances carbonizable by hot sulfuric acid, passes test
ign. residue
≤0.02%
pKa
(1) 3.13, (2) 4.76, (3) 6.4
mp
153-159 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.003%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%
cation traces
Fe: ≤3 ppm
Pb: ≤2 ppm
functional group
carboxylic acid
hydroxyl
storage temp.
room temp
Quality Level
Gene Information
human ... SRC(6714)
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Categorie correlate
1 of 4
Questo articolo | 791725 | C0759 | W230633 |
|---|---|---|---|
| assay ≥99.5% | assay ≥99.5% | assay 99% | assay ≥99.5% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 400 |
| mp 153-159 °C (lit.) | mp 153-159 °C (lit.) | mp 153-159 °C (lit.) | mp 153-159 °C (lit.) |
| form crystals | form crystals | form crystals | form crystals, granules or powder |
| grade ACS reagent | grade ACS reagent, anhydrous | grade - | grade FG, Fragrance grade, Halal, Kosher, natural |
| expl. lim. 8 %, 65 °F | expl. lim. 8 %, 65 °F | expl. lim. 8 %, 65 °F | expl. lim. 8 %, 65 °F |
Application
- Il tampone fosfato-citrato da usare nel saggio immuno-assorbente legato a un enzima.[1]
- La soluzione acquosa di cerio stabilizzata con citrato, che è stata utilizzata nella sintesi di nanoparticelle di ossido di cerio.[2]
- La soluzione madre tamponata con acido citrico-Na2HPO4 destinata alla determinazione dell′attività dell′ureasi fecale.[3]
- La soluzione anticoagulante di citrato-destrosio A (ACD-A), utilizzata durante l′isolamento delle cellule progenitrici endoteliali derivate dal sangue.[4]
L′acido citrico è stato utilizzato anche:
- In un nuovo processo che permette di controllare le dimensioni delle particelle durante la sintesi dei cubottaedri di palladio.[5]
- Per preparare nanodot di carbonio (CND) derivati dall′acido citrico con il metodo di carbonizzazione “bottom-up”.[6]
- Come agente chelante bi-componente per la sintesi del Li4Ti5O12 (ossido di litio titanato) con un nuovo metodo sol-gel.[7]
General description
Other Notes
Legal Information
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Classe di stoccaggio
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Protocolli
SEC-MS protocol for rapid glycoprofiling of monoclonal antibodies with antibody purification and mass spectrometer calibration.
A complete workflow for the intact and middle-up mass analysis of reduced and non-reduced monoclonal antibodies based on SEC-MS with sample preparation by protein-A affinity clean-up.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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Technical question: is this product sourced in the EU. Is it for RUO.
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Yes, this product is intended for research use only. The country of origin may vary lot to lot.
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Do you have a recommendation for an expiry date after opening this reagent (storage in dry place at RT)?
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This product does not contain an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.
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