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
1.00748
Sulfuric acid
98%, for the determination of nitrogen
Synonym(s):
Sulfuric acid
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| Pack Size | SKU | Availability | Price |
|---|
About This Item
Product Name
Sulfuric acid 98%, for the determination of nitrogen
vapor density
<0.3 (25 °C, vs air)
Quality Level
vapor pressure
0.0001 hPa ( 20 °C), 1 mmHg ( 146 °C)
assay
≥97.5% (alkalimetric)
form
liquid
ign. residue
≤2 ppm
pH
0.3 (25 °C, 49 g/L in H2O)
bp
~290 °C (lit.)
mp
-20 °C
solubility
water: soluble at 20 °C
density
1.840 g/mL at 25 °C (lit.)
cation traces
N: ≤1 ppm
storage temp.
no temp limit
SMILES string
OS(O)(=O)=O
InChI
1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
InChI key
QAOWNCQODCNURD-UHFFFAOYSA-N
Application
Analysis Note
Total nitrogen (N): ≤ 1 ppm
Residue on ignition: ≤ 2 ppm
Date of expiry: see product label
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥97.5% (alkalimetric) | assay 95.85-96.15% (alkalimetric) | assay 90.0-91.0% (acidimetric) | assay - |
| Quality Level 300 | Quality Level 300 | Quality Level 300 | Quality Level 300 |
| form liquid | form liquid | form liquid | form liquid |
| storage temp. no temp limit | storage temp. no temp limit | storage temp. no temp limit | storage temp. 15-25°C |
| pH 0.3 (25 °C, 49 g/L in H2O) | pH 0.3 (25 °C, 49 g/L in H2O) | pH - | pH <1 (20 °C in H2O, strongly acid) |
| solubility water: soluble at 20 °C | solubility water: soluble at 20 °C | solubility - | solubility - |
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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Related Content
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1007482500 | 04022536010045 |
| 1007480500 | 04022536010021 |
| 1007489025 | 04022536555515 |
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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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