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
16005
Paraformaldehyde
meets analytical specification of DAC, 95.0-100.5%
Synonym(s):
Polyoxymethylene
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About This Item
vapor density
1.03 (vs air)
Quality Segment
vapor pressure
<1.45 mmHg ( 25 °C)
assay
95.0-100.5%
form
powder
autoignition temp.
572 °F
quality
meets analytical specification of DAC
expl. lim.
73 %
technique(s)
NMR: suitable
impurities
residual solvents, in accordance, <0.1% sulfated ash, 10 ppm heavy metals (as Pb)
mp
120-170 °C (lit.)
solubility
water: insoluble
density
0.88 g/mL at 25 °C (lit.)
suitability
in accordance for appearance of solution, suitable for acidity or alkalinity (complying)
storage temp.
2-8°C
SMILES string
[O-]#[C+H2]
InChI
1S/CH2O/c1-2/h1H2
InChI key
WSFSSNUMVMOOMR-UHFFFAOYSA-N
General description
1 of 1
This Item | |||
|---|---|---|---|
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| assay 95.0-100.5% | assay 95% | assay 95% | assay ≥95% (acidimetric) |
| technique(s) NMR: suitable | technique(s) - | technique(s) - | technique(s) immunofluorescence: suitable |
| solubility water: insoluble | solubility alcohol and cold water: slightly soluble, ethers, hydrocarbons and carbon tetrachloride: insoluble | solubility - | solubility - |
| form powder | form prilled | form powder | form solid |
| autoignition temp. 572 °F | autoignition temp. 572 °F | autoignition temp. 572 °F | autoignition temp. 300 °C |
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signalword
Danger
Hazard Classifications
Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Carc. 1B - Eye Dam. 1 - Flam. Sol. 2 - Muta. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
target_organs
Respiratory system
Storage Class
4.1B - Flammable solid hazardous materials
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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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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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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