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
440191
Hexamethyldisilazane
reagent grade, ≥99%
Synonym(s):
Bis(trimethylsilyl)amine, HMDS
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
100 mL | Check Cart for Availability | $92.60 |
1 L | Check Cart for Availability | $388.00 $329.80 |
About This Item
grade
reagent grade
Quality Segment
assay
≥99%
form
liquid
refractive index
n
bp
125 °C (lit.)
SMILES string
C[Si](C)(C)N[Si](C)(C)C
InChI
1S/C6H19NSi2/c1-8(2,3)7-9(4,5)6/h7H,1-6H3
InChI key
FFUAGWLWBBFQJT-UHFFFAOYSA-N
General description
Application
- As a silylating agent in the trimethylsilylation of alcohols under nearly neutral reaction conditions.
- To control the molecular weights of polypeptides during ring-opening polymerization of α-amino acid N-carboxyanhydrides.
- To fabricate silicon carbonitride thin films by plasma-enhanced CVD.
- For specimen preparation for scanning electron microscopy and the preparation of trimethylsilyl ethers from hydroxy compounds.
Features and Benefits
- High chemicalstability and low molecular weight
- Nontoxic andcost-effective reagent
- Ammonia is theonly byproduct generated during silylation
- Silylationreaction using HDMS is nearly neutral and does not need any precaution
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥99% | assay ≥99.0% (GC) | assay 99.9% | assay ≥97.0% (GC) |
| form liquid | form liquid | form liquid | form liquid |
| grade reagent grade | grade derivatization grade (GC derivatization) | grade - | grade - |
| refractive index n | refractive index n | refractive index n | refractive index n |
| bp 125 °C (lit.) | bp 125 °C (lit.) | bp 125 °C (lit.) | bp 125 °C (lit.) |
| Quality Level 300 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
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signalword
Danger
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Flam. Liq. 2
Storage Class
3 - Flammable liquids
wgk
WGK 2
flash_point_f
52.5 °F - closed cup
flash_point_c
11.4 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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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 storage temperature of this reagent?
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This product may be stored at room temperature. For products with no specified storage temperature given on the label or product page, ambient storage may be assumed. Products that require controlled temperature storage, such as refrigeration or freezer conditions, storage temperatures are published on the product label, Certificate of Analysis, the Safety Data Sheet (SDS).
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