Eriochrome® black T (C.I. 14645), 50 g
Molar mass (M) 461,38 g/mol
Melting point (mp) 800 °C
CAS No. [1787-61-7]
Trituration with NaCl (1:99), ready-to-use
CHF32.05/Pack Qty. Campaign price!
excl. VAT. | 50 g per Pack Qty.
Art. No. K860.1
Now recurring orders conveniently delivered as a subscription!
With the new Carl Roth Replenishment Service you can let products be ordered automatically which you need regularly in your lab!How it works:
Put all products for your subscription in the desired quantity in the basket.
In the shopping cart, select the option "Order shopping cart as subscription" Order as subscription.
Set Starty point and interval for your subscription and submit order!
By the way: Through your account you can customize or delete your subscriptions anytime.
Do you have a question about this product?
Eriochrome® black T (C.I. 14645) 1 % in NaCl, trituration
rare earth metals
- Subtotal: 0.00
|Order No.||Pack Qty.||Pack.||Price||Quantity|
Available at short notice
Delivery date currently unknown
Indicators and Dyes
Indicators and DyesCarl ROTH offers many indicators and dyes of high purity, which can be used in special applications.
Determination of Water Hardness
Determination of Water HardnessWater contains a whole host of salts and other compounds in addition to the gases dissolved in it (oxygen, nitrogen, carbon dioxide). Its most important constituents are magnesium and calcium in the form of their chlorides, sulphates and bicarbonates. These dissolved salts are known as hardeners. The bicarbonates precipitate in the heat (during boiling) as carbonates and are known as carbonate hardness or temporary hardness. The sulphate and chloride compounds are known as permanent hardness or non-carbonate hardness. Total hardness describes the concentration of alkaline earth metal ions in water.
The unit of measurement for water hardness used to be 1 °dH (German degrees of hardness), which corresponds to 10,00 mg CaO or 7,19 mg MgO in one litre of water. Today we use millimoles per litre (mmol/l), whereby 1 °dH corresponds to 0,18 mmol/l of earth metal ions and 1 mmol/l corresponds to 5,6 °dH.
|Suitability as indicator||complies|
|Trituration of Eriochrome black T with NaCI p.a., 1:100 simply add to the solution that has to be titrated; 1-4 mg dye in 100 ml.|