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Product Name
Starch, soluble, ACS reagent
SMILES string
O1[C@@H]([C@@H]([C@H]([C@@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO
InChI
1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5-,6+,7-,8-,9-,10-,11+,12-/m1/s1
InChI key
GUBGYTABKSRVRQ-ASMJPISFSA-N
biological source
potato
grade
ACS reagent
form
powder
ign. residue
≤0.4%
color
white
pH
5.0-7.0 (25 °C, 2% in solution)
mp
256 -258 °C ((493 - 496 °F ))
solubility
H2O: passes test
suitability
passes test for sensitivity as indicator
storage temp.
room temp
Quality Level
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This Item | 1.01253 | S1300000 | 33615 |
|---|---|---|---|
| biological source potato | biological source - | biological source - | biological source potato |
| grade ACS reagent | grade - | grade pharmaceutical primary standard | grade - |
| solubility H2O: passes test | solubility 50 g/L | solubility - | solubility - |
| Quality Level 200 | Quality Level 100 | Quality Level - | Quality Level 200 |
| suitability passes test for sensitivity as indicator | suitability - | suitability - | suitability passes test for test of sensitivity |
| form powder | form - | form - | form powder |
Application
Biochem/physiol Actions
Other Notes
Preparation Note
There should be no noticeable change in opalescence.
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Related Content
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Could you please provide the particle size information for this product?
1 answer-
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What is the particle size of the S9765 starch product?
1 answer-
The particle size of this product is not determined.
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Can I use this for diastase activity in honey
1 answer-
This product has not been evaluated for use as a substrate for diastase activity in honey. It is advisable to refer to the method to determine if there are specific requirements for the starch to be purchased. If the method being referred to specifies a soluble starch solution should be prepared, this is the item mentioned.
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I aim to evaluate the degradation of starch by some of our bacterial strains using spectrophotometry. What is the impact of autoclaving starch. Does autoclaving cause partial degradation ? Is the starch concentration the same before and after autoclaving?
1 answer-
This product has not undergone any functional assays to determine the impact of autoclaving on the overall starch structure. Consulting scientific literature is recommended for specific guidance on conducting this study. For example, please see the citation below where researchers determine the effect of autoclaving on the morphological properties of starch.
Babu, A. S., & Parimalavalli, R. (2014). Effect of Autoclaving on Functional, Chemical, Pasting and Morphological Properties of. JOURNAL OF ROOT CROPS, 39(1), 78–83. Retrieved from https://www.journal.isrc.in/index.php/jrc/article/view/187
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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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
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How is the starch soluble? Is it a product of hydrolysis of poppy potato starch?
1 answer-
This product originates from Solanum tuberosum. Differences in the structure of amylose and amylopectin allow it to be soluble.
See the link below for a publication that may be of interest: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6049785/#:~:text=Amylopectin%20from%20normal%20potato%20starch,in%20cold%20water%20%5B8%5D.The preparation instructions are as follows:
- Prepare a paste of 2g of the starch with a little cold water
- Add to it 100ml of boiling water with stirring.
The solution should be no more than opalescent and on cooling it should remain a liquid and not increase in opalescence.Please see the link below for a sample Certificate of Origin:
https://www.sigmaaldrich.com/US/en/coo/undefined/S9765/SLCF7026Helpful?
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what is the purity of this starch
1 answer-
This product is not tested for purity. It is primarily used as an enzyme substrate. The residue on ignition would offer some indication of the level of impurity, however this is not directly correlated. See the link below for a sample Certificate of Analysis:
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/S9765-BULKSLCQ5576.pdfHelpful?
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is this product suiable as the indicator for determine iodine?
1 answer-
It has not been determined if this product is suitable as an indicator to determine iodine. While it may be suitable, product number 85642 has been tested for use in this application. See the link below for a sample CofA for review. https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/85642-BULKBCCJ9269.pdf
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What is the Department of Transportation shipping information for this product?
1 answer-
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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