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
C0759
Citric acid
99%, crystals
Synonym(s):
2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid
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| Pack Size | SKU | Availability | Price |
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About This Item
Product Name
Citric acid, 99%
vapor pressure
≤ 0.1 hPa ( at 25 °C)
Quality Segment
assay
99%
form
crystals
expl. lim.
8 %, 65 °F
concentration
≤100%
pH
ca.1,7-at 100 g/l-at 20 °C
pKa (25 °C)
(1) 3.13, (2) 4.76, (3) 6.40
pKa
(1) 3.13, (2) 4.76, (3) 6.4
bp
200 °C/at 1.013 hPa (decomposition)
mp
153-159 °C (lit.)
solubility
water: soluble 383 g/L at 25 °C
density
1,67 g/cm3 at at 20 °C
functional group
carboxylic acid, hydroxyl
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
General description
Application
- Trialkyl citrates via sulfuric acid-catalyzed esterification with aliphatic alcohols C2-C5.
- Biodegradable thermoset polymer via catalyst-free polycondensation reaction.
1 of 1
This Item | |||
|---|---|---|---|
| concentration ≤100% | concentration - | concentration - | concentration - |
| assay 99% | assay ≥99.5% | assay ≥99.5% | assay ≥99.5% |
| Quality Level 200 | Quality Level 300, 400 | Quality Level 200 | Quality Level 200 |
| form crystals | form powder or granules | form crystals | form crystals |
| solubility water: soluble 383 g/L at 25 °C | solubility water: 383 g/L at 25 °C | solubility - | solubility - |
| pH ca.1,7-at 100 g/l-at 20 °C | pH - | pH - | pH - |
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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
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| C0759-1KG | 04061833452004 |
| C0759-5KG | 04061835321032 |
| C0759-100G | 04061833451960 |
| C0759-500G | 04061833452035 |
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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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