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Methyl orange (C.I. 13025), 250 g

ACS, 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: In smaller quantities, lead to immediate serious damage to health or death. Safety: Do not inhale, touch or swallow. Wear work safety equipment. Call a poison control centre or doctor immediately. Recovery position.
Danger
H301
i toxic if swallowed
P270 P301+P310 P405
i do not eat, drink or smoke when using this product, IF SWALLOWED: Immediately call a POISON CENTER/doctor, store locked up
Pack Qty.
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4-(Dimethylamino)-azobenzene-4'-sulphonic acid sodium salt, Orange III
Empirical formula C14H14N3NaO3S
Molar mass (M) 327,4 g/mol
Melting point (mp) >300 °C
ADR 6.1 III
WGK 1
CAS No. [547-58-0]
EG-Nr. 208-925-3
UN-Nr. 3143

Indicator pH 3.2-4.4
Dissolve 0.04 g in 100 ml of ethanol (20 %) or 0.4 g in 100 ml of water

Azo dye, low soluble in water (5 g/l).

Ingredient of trichrom stains used for detection of connective tissue.
Product details
Guarantee analysis

€62.90/Pack Qty. 

excl. VAT. | 250 g per Pack Qty.

Art. No. T118.3

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Product details



Methyl orange (C.I. 13025) ACS, for microscopy

Azo dye, low soluble in water (5 g/l).

Ingredient of trichrom stains used for detection of connective tissue.



Technical Information
Colour conversion pink - yellow 
Handling area pH 3,2 - 4,4 
Methyl orange (C.I. 13025)
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Order No. Pack Qty. Pack. Price Quantity
T118.1 50 g glass €27.85
T118.2 100 g glass €40.75
T118.3 250 g glass €62.90
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Indicators and Dyes

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Guarantee analysis

Appearanceorange powder  
Appearance of solutioncomplies  
pH-transition range3.2 (pink)- 4.4 (yellow)  
Loss on drying (110 °C)≤3,0 %  

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