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
33114
Acide citrique monohydrate
ACS reagent grade, 99.5-102%, solid, puriss. p.a., reag. ISO, reag. Ph. Eur., buffer substance
Synonyme(s) :
2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate
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Nom du produit
Acide citrique monohydrate, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, 99.5-102%
InChI key
YASYEJJMZJALEJ-UHFFFAOYSA-N
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
SMILES string
OC(CC(O)(C(O)=O)CC(O)=O)=O.O
grade
ACS reagent
puriss. p.a.
agency
USP/NF
reag. ISO
reag. Ph. Eur.
assay
99.5-100.5% (calc. on anhydrous substance)
99.5-102%
form
solid
impurities
≤0.005% insolubles in water
≤2 ppm heavy metals (as Pb)
7.5-9.0% water (Karl Fischer)
ign. residue
≤0.01% (as SO4)
pKa
(1) 3.13, (2) 4.76, (3) 6.4
anion traces
chloride (Cl-): ≤5 mg/kg
oxalate (C2O42-): ≤100 ppm
phosphate (PO43-): ≤10 mg/kg
sulfate (SO42-): ≤20 ppm
cation traces
Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤3 ppm
Pb: ≤2 ppm
Zn: ≤5 mg/kg
suitability
complies for appearance of solution
complies for reaction against H2SO4
functional group
carboxylic acid
Quality Level
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Catégories apparentées
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Cet article | 27102 | C1909 | C7129 |
|---|---|---|---|
| grade ACS reagent, puriss. p.a. | grade - | grade ACS reagent | grade reagent grade |
| assay 99.5-100.5% (calc. on anhydrous substance), 99.5-102% | assay 99.5-100.5% (based on anhydrous substance) | assay ≥99.0% | assay ≥98% (GC/titration) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| agency USP/NF, reag. Ph. Eur., reag. ISO | agency - | agency - | agency - |
| form solid | form grit | form powder | form powder |
| anion traces chloride (Cl-): ≤5 mg/kg, phosphate (PO43-): ≤10 mg/kg, oxalate (C2O42-): ≤50 ppm, sulfate (SO42-): ≤20 ppm | anion traces chloride (Cl-): ≤50 mg/kg, oxalate (as oxalic acid): ≤100 mg/kg, sulfate (SO42-): ≤100 mg/kg | anion traces chloride (Cl-): ≤0.001%, oxalate (C2O42-): passes test (limit about 0.05%), phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.002% | anion traces - |
Application
General description
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Classe de stockage
11 - Combustible Solids
wgk
WGK 1
flash_point_f
345.0 °F - closed cup
flash_point_c
173.9 °C - closed cup
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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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