Sodium Carbonate Formaline after KOSSA
Sodium carbonate formalin according to KOSSA is an important solution in medical and scientific laboratories. It is commonly used in histology to fix tissue specimens because formaldehyde is a strong fixative that cross-links proteins by forming covalent bonds. In von KOSSA staining, it is used to visualize calcium deposits in tissues.
Chemically, the solution consists of formaldehyde, an aldehyde with the formula CH2O, and sodium carbonate, a salt with the formula Na2CO3. Formaldehyde is highly soluble in water and reacts with amino groups in proteins to form stable crosslinks. Sodium carbonate serves as a buffer to keep the pH stable.
The use of sodium carbonate formalin solution according to KOSSA can result in stable and well-preserved tissue specimens that allow accurate histological examination.
The molarity of the solution is approximately 0.47 M.
Chemically, the solution consists of formaldehyde, an aldehyde with the formula CH2O, and sodium carbonate, a salt with the formula Na2CO3. Formaldehyde is highly soluble in water and reacts with amino groups in proteins to form stable crosslinks. Sodium carbonate serves as a buffer to keep the pH stable.
The use of sodium carbonate formalin solution according to KOSSA can result in stable and well-preserved tissue specimens that allow accurate histological examination.
The molarity of the solution is approximately 0.47 M.
Article no.: 17108
Fixation of tissue samples
Important Information
Sales restriction: no private users!
UN-Nummer: 0000
Warning labels:

Lagerung: 15 … 25 °C
product information
Relevant Ingredients:
• Formaldehyde ~37%, stabilised
• Sodium carbonate anhydrous
Hazard and safety instructions
| Signal Word 1: Gefahr |
| Signal Word 2: exclam, silhouete, , |
Warning labels: ![]() ![]() |
Suggested products
-
Dyeing kit: Silvering according to von KOSSA (KRUTSAY)
Neurofibril staining
Article number: 16764from € 149.07 + VAT
Pinned products15
-
X
Hydrochloric Acid 5 %
from 1 € 13.40 + VAT -
X
Etching agent acc. to BARDOLLE and MOREAU
from 1 € 31.89 + VAT -
X
TECHNOVIT® 4000
from 1 € 0.06 + VAT -
X
Ethanol 80 %, undenatured
from 1 € 15.36 + VAT -
X
Ammonium iron(III) sulphate 2 %
from 1 € 19.44 + VAT -
X
Hydrochloric acid Alcohol (5 % / 96 %)
from 1 € 16.57 + VAT -
X
Caustic potash / Potassium hydroxide / KOH 3 %
from 1 € 7.98 + VAT -
X
Iron(III) Chloride 20 %
from 1 € 16.19 + VAT -
X
Iron(III) Chloride 10 %
from 1 € 17.50 + VAT -
X
Ferric chloride 29 %
from 1 € 16.83 + VAT -
X
TECHNOVIT® 4004 - THE TRANSPARENT
from 1 € 0.06 + VAT -
X
Etchant according to Le CHATELIER
from 1 € 18.66 + VAT -
X
Colour etchant acc. MARBLE
from 1 € 22.78 + VAT -
X
Flashing agent, containing xylene
from 1 € 78.79 + VAT -
X
Glycerine gelatine
from 1 € 24.61 + VAT