Technical Data Sheet
Orange II sodium salt (C.I. 15510), 25 g
for microscopy
H372-H412
causes damage to organs through prolonged or repeated exposure, harmful to aquatic life with long lasting effects
P260 P273 P314
do not breathe dust, avoid release to the environment, get medical advice/attention if you feel unwell
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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
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
Indicator pH 7.4-8.6 and pH 10.2-11.8
Dissolve 0.1 g in 100 ml of water
Dissolve 0.1 g in 100 ml of water
Water-soluble dye, is used in cytology, e.g. as ingredient of Papanicolaou solution 2b.
€34.95/Pack Qty.
excl. VAT. | 25 g per Pack Qty.
Art. No. 7729.2
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€33.20/Pack Qty.
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€31.46/Pack Qty.
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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 |
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Orange II sodium salt (C.I. 15510)
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Art. No. | Pack Qty. | Pack. | Price | Quantity | |
---|---|---|---|---|---|
7729.1 | 5 g | glass |
€19.90 |
|
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7729.2 | 25 g | glass |
€34.95 |
|
|
7729.3 | 100 g | glass |
€84.40 |
|
|
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Downloads / MSDS
General information
Indicators and Dyes
Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.
Certificates of Analysis
Type analysis
Appearance | orange to brown powder |
pH-transition range | 7,4 (amber)-8,6 (orange) |
pH-transition range | 10,2 (orange)-11,8 (red) |