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Orange II sodium salt (C.I. 15510), 5 g

From  Carl ROTH
for microscopy
Icon_EVE-EUD Please consider that this product might be liable to some legal sanctions as for example to obtain an end user declaration or the prohibition of some applications. For details please do contact your counterpart in our sales department!
Examples of effect: Have an allergenic effect, carcinogenic, mutagenic, toxic to reproduction and cause developmental toxicity (reprotoxic) or damage to organs Safety: You must be well-informed before starting work with these substances; wear protective clothing and gloves, eye protection and mask or breathing protection.
Danger
H372-H412
i causes damage to organs through prolonged or repeated exposure, harmful to aquatic life with long lasting effects
P260 P273 P314
i do not breathe dust, avoid release to the environment, get medical advice/attention if you feel unwell
Pack Qty.
Pack.
Acid orange 7
Empirical formula C16H11N2NaO4S
Molar mass (M) 350,33 g/mol
Density (D) 1,53 g/cm³
Melting point (mp) 290 °C
WGK 2
CAS No. 633-96-5
EG-Nr. 211-199-0

Dissolve 0.1 g in 100 ml of water
Indicator pH 7.4-8.6 and pH 10.2-11.8

Water-soluble dye, is used in cytology, e.g. as ingredient of Papanicolaou solution 2b.
Product details

€19.50/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 7729.1

In production
from 6 Pack Qty. €18.52/Pack Qty.
from 24 Pack Qty. €17.55/Pack Qty.

Product details



Orange II sodium salt (C.I. 15510) for microscopy

Water-soluble dye, is used in cytology, e.g. as ingredient of Papanicolaou solution 2b.



Technical Information
Colour conversion amber - orange 
orange - red 
Transition range pH 7,4 - 8,6 
10,2 - 11,8 
Orange II sodium salt (C.I. 15510)
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Art. No. Pack Qty. Pack. Price Quantity
7729.1 5 g glass

€19.50

7729.2 25 g glass

€34.90

7729.3 100 g glass

€84.50

Available from stock Karlsruhe
Available (note delivery time)
In procurement
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Delivery date currently unknown
Selected quantity:   0
  1. Subtotal:  0.00

Downloads / MSDS


General information

Dyes

For brilliant results in the laboratory and research

Discover our extensive range of dyes for demanding applications in science and industry. Whether for microscopy, histology, biochemistry or industrial applications, you will find the right dye here.


The content of colourants is not specified for many products for various reasons:

1. complex composition: colourants are often mixtures of several components that may be present in different ratios. These compositions can vary, which makes it difficult to state an exact content.

2. application focus: In many applications, especially in the textile and food industries, the exact concentration of a dye is less relevant than its colouring power or its ability to achieve a certain colour. Here, the colour strength or the ability to impart colour is the most important criterion.

3. standardisation: Many dyes are traded according to certain standards (e.g. C.I. numbers) which guarantee a certain quality and colouring. These standards often make an exact specification of content superfluous, as users know that the colourant has the desired properties.

4. manufacturing processes: The manufacturing process of colourants can lead to natural variations in content. Instead of specifying an exact content, quality control is often carried out to ensure that the colourant is within an acceptable range.

5. Regulatory aspects: In some cases, regulatory requirements may not require the manufacturer to declare the exact content as long as the colourant is safe and effective for the intended purpose.

6. cost reasons: An exact determination of the content often requires complex analytical procedures that could increase production costs. Therefore, some manufacturers do not provide this additional information in order to save costs.

In summary, it can be said that the content of colourants is often not specified because other quality criteria are in the foreground and the exact concentration is not decisive for many applications.


Certificates of Analysis

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Type analysis

Appearanceorange to brown powder
pH-transition range7,4 (amber)-8,6 (orange)
pH-transition range10,2 (orange)-11,8 (red)