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
1.88009
Aquastar® CombiMethanol
one component solvent for volumetric Karl Fischer titration, max. 0.01% H₂O, Aquastar®
Synonym(s):
Methanol, MeOH, Hydroxymethane, Methyl alcohol, Carbinol, Methyl alcohol
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Product Name
CombiMethanol, Solvent for volumetric Karl Fischer titration with one component reagents max. 0.01% H2O Aquastar®
vapor density
1.11 (vs air)
vapor pressure
128 hPa ( 20 °C), 410 mmHg ( 50 °C), 97.68 mmHg ( 20 °C)
product line
Aquastar®
form
liquid
autoignition temp.
725 °F
potency
5628 mg/kg LD50, oral (Rat), 17100 mg/kg LD50, skin (Rabbit)
Quality Level
reaction suitability
reaction type: volumetric
technique(s)
Karl-Fischer titration: suitable, titration: suitable
kinematic viscosity
0.54-0.59 cSt(20 °C)
mp
−98 °C (lit.)
transition temp
flash point 9.7 °C
format
single component solution
storage temp.
15-25°C
1 of 4
This Item | 179957 | 1.06018 | 1.06007 |
|---|---|---|---|
| reaction suitability reaction type: volumetric | reaction suitability - | reaction suitability - | reaction suitability - |
| technique(s) Karl-Fischer titration: suitable | technique(s) - | technique(s) HPLC: suitable | technique(s) HPLC: suitable |
| format single component solution | format neat | format neat | format neat |
| vapor density 1.11 (vs air) | vapor density 1.11 (vs air) | vapor density 1.11 (vs air) | vapor density 1.11 (vs air) |
| vapor pressure 128 hPa ( 20 °C) | vapor pressure 410 mmHg ( 50 °C), 97.68 mmHg ( 20 °C) | vapor pressure 128 hPa ( 20 °C), 410 mmHg ( 50 °C), 97.68 mmHg ( 20 °C) | vapor pressure 128 hPa ( 20 °C), 410 mmHg ( 50 °C), 97.68 mmHg ( 20 °C) |
| product line Aquastar® | product line - | product line LiChrosolv® | product line LiChrosolv® |
Analysis Note
Legal Information
related product
signalword
Danger
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1
target_organs
Eyes,Central nervous system
Storage Class
3 - Flammable liquids
flash_point_f
49.5 °F - closed cup
flash_point_c
9.7 °C - closed cup
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Protocols
Summary application report for analysis of moisture in Coffee extract (Instant coffee)
Accurately measure the moisture content in ethanolamine (HOCH₂CH₂NH₂) through Karl Fischer titration, using both volumetric or coulometric methods.
Summary application report for analysis of moisture in Perchloric acid 0.1 mol/L in acetic acid
Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.
Related Content
Karl Fischer 滴定法可測定原料和產品中的水含量，是一種廣泛使用的分析方法。
Karl Fischer 滴定法可測定原料和產品中的水含量，是一種廣泛使用的分析方法。
Karl Fischer titration determines water content in raw materials and products, a widely used analytical method.
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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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