grade
technical grade
Quality Level
form
powder
composition
Dye content, ~80%
solubility
H2O: 1 mg/mL
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
[Cl-].Cc1cc2N=C3C=CC(\C=C3Sc2cc1N)=[N+](\C)C
InChI
1S/C15H15N3S.ClH/c1-9-6-13-15(8-11(9)16)19-14-7-10(18(2)3)4-5-12(14)17-13;/h4-8,16H,1-3H3;1H
InChI key
GEDVVYWLPUPJJZ-UHFFFAOYSA-N
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Related Categories
General description
Application
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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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Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.
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Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).
Example:
Additional examples:
705578-5MG-PW
PL860-CGA/SHF-1EA
MMYOMAG-74K-13
1000309185
enter as 1.000309185)
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How to Find a Lot/Batch Number for COA
Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.
Aldrich Products
For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').
For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').
For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.
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In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
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There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
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.
Is there a difference between Toluidine Blue O and Toluidine Blue and which is best for staining tissue sections?
Toluidine Blue O and Toluidine Blue are generally regarded as synonyms. The dye can be found in 2 forms. There is a chloride form and zinc chloride double salt. Products T3260 and 198161 are the chloride form. This is the form certified by the Biological Stain Commission. The dye listed as simply Toluidine Blue, Product 89640, is the zinc chloride double salt. For routine use today, the chloride form should be utilized. The product number recommended for biological/histological staining is Product 198161, Toluidine Blue O. This product has been found to provide acceptable staining of tissue by the Biological Stain Commission. Products 198161 and 89640 have not been suitability tested for the staining of tissue sections.
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