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
428116
Polypropylene
Isotactic, average Mw ~12,000, average Mn ~5,000
Synonym(s):
PP
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 250 g | Available to ship TODAYfromMILWAUKEE | $70.50 | |
| 1 kg | Available to ship TODAYfromMILWAUKEE | $170.00 |
About This Item
$70.50
Available to ship TODAYDetails
Quality Level
form
pellets
mol wt
average Mn ~5,000, average Mw ~12,000
viscosity
6.0 poise(190 °C, Brookfield Thermosel)(lit.)
mp
157 °C
acid number
<0.05 mg KOH/g
transition temp
softening point 163 °C (ring and ball, ASTM E 28)
density
0.9 g/mL at 25 °C (lit.)
SMILES string
CC=C
InChI
1S/C22H42O3/c1-2-3-4-5-11-14-17-20-21(25-20)18-15-12-9-7-6-8-10-13-16-19-22(23)24/h20-21H,2-19H2,1H3,(H,23,24)/t20-,21+/m1/s1
InChI key
NSYDMBURIUSUDH-RTWAWAEBSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| viscosity 6.0 poise(190 °C, Brookfield Thermosel)(lit.) | viscosity 4.0 poise(190 °C, Brookfield Thermosel)(lit.) | viscosity - | viscosity - |
| form pellets | form beads | form beads | form - |
| mp 157 °C | mp 156 °C | mp - | mp - |
| density 0.9 g/mL at 25 °C (lit.) | density 0.934 g/mL at 25 °C | density 0.9 g/mL at 25 °C (lit.) | density - |
| acid number <0.05 mg KOH/g | acid number 40.0‑55.0(mg-KOH) | acid number - | acid number - |
| transition temp softening point 163 °C (ring and ball, ASTM E 28) | transition temp softening point 157 °C (ring and ball) | transition temp Tm 160-165 °C | transition temp - |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 428116-250G | 04061832104812 |
| 428116-1KG | 04061832104805 |
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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폴리프로필렌 물질을 구매하고자 합니다. Isotactic 구조의 물질을 구매하고자 하는데 유리전이온도가 -20~ -10도 정도에 해당하는 특성을 보이기를 희망합니다. Mw가 어떠한 물질을 구매해야 이 조건을 만족시킬 수 있을지 여쭙고자 합니다.
1 answer-
Data is not available on the exact molecular weight of isotactic polypropylene that would result in a glass transition temperature range of -20 to -10 degrees Celsius. Typically, atactic or amorphous polypropylene will have lower glass transition temperatures within the specified range, while isotactic polypropylene will have higher glass transition temperatures. In general, low molecular weight polymers will have a lower glass transition temperature, so it is advisable to purchase low molecular weight polypropylene.
Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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