Formaldehyde solution about 37% GR for analysis stabilized with about 10% methanol ACS;Reag. Ph Eur

Descriptions

Analysis Note

Assay (acidimetric): 36.5 - 38.0 %Assay (iodometric): 36.5 - 38.0 %Identity: passes testColor: ≤ 10 HazenAppearance of solution: passes testFree acid (as HCOOH): ≤ 0.025 %Density (20 °C): 1.080 - 1.090 g/mlChloride (Cl): ≤ 0.0001 %Sulfate (SO₄): ≤ 0.002 %Heavy metals (as Pb): ≤ 0.0002 %Fe (Iron): ≤ 0.0001 %Methanol (GC): 9.0 - 11.0 %Sulfated ash: ≤ 0.002 %

General description

Formaldehyde (HCOH) is one of the most familiar and effective fixatives. The fixation of the histological specimen material of human or animal origin is commonly performed in a 4% or 10% Formaldehyde solution. Chemically, the 4 % Formaldehyde solution equals a 10 % Formalin solution.

Packaging

25 l in Plastic container

1, 2.5, 5 l in Plastic bottle

Specifications

bp	93-96 °C/1013 hPa
Manufacturer	SIGMA-ALDRICH
Agency	reag. Ph. Eur.
Density	1.09 g/cm3 at 20 °C
Form	liquid
Autoignition Temp.	300 °C (Formaldehyde)
Assay	36.5-38.0% (iodometric, acidimetric)