Product 1004960700 and all other formaldehyde or formalin solutions contain methanol to prevent the formaldehyde from reforming as a polymer or escaping as a gas. If a methanol-free solution is required, paraformaldehyde powders or crystals can be purchased and prepared into methanol-free solutions, although these solutions are unstable and should be prepared fresh daily or kept for only short periods of time.
1.00496
Formaldehyde solution 4%, buffered, pH 6.9
(approx. 10% Formalin solution) for histology
Synonym(s):
Formaline solution, Methanal solution, Methyl aldehyde solution
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700 ML
$85.00
5 L
$122.00
10 L
$193.00
About This Item
UNSPSC Code:
41116124
NACRES:
NA.21
application(s):
diagnostic assay manufacturing
hematology
histology
hematology
histology
bp:
100 °C/1013 hPa
Quality Level
form
liquid
IVD
for in vitro diagnostic use
concentration
3.8-4.2% (acidimetric)
color
colorless
pH
6.7-7.1 ( in H2O)
bp
100 °C/1013 hPa
mp
-92 °C
density
1.017 g/cm3 at 20 °C
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
15-25°C
1 of 4
This Item | 1.03999 | 1.04003 | F1635 |
|---|---|---|---|
| Quality Level 400 | Quality Level 400 | Quality Level 400 | Quality Level 200 |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) - |
| form liquid | form liquid | form liquid | form liquid |
| density 1.017 g/cm3 at 20 °C | density 1.09 g/cm3 at 20 °C | density 1.09 g/cm3 at 20 °C, 1.09 g/mL at 25 °C (lit.) | density 1.09 g/mL at 25 °C (lit.) |
| pH 6.7-7.1 ( in H2O) | pH 2.8-4 (20 °C in H2O) | pH 2.8-4.0 (20 °C in H2O) | pH 2.8-4.0 |
| bp 100 °C/1013 hPa | bp 93-96 °C/1013 hPa | bp 93-96 °C/1013 hPa | bp 97 °C |
General description
Formaldehyde (HCOH) is one of the most familiar and effective fixatives. Formaldehyde fixation is suitable for nearly all types of histological tissue, as well as calcified deposits, bone, cartilage, nervous system specimens. 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. This Formaldehyde solution 4% is a ready-to-use working solution that is stabilized with phosphate buffer to protect tissue structures. The development of formic acid will be effective prevented. It is an IVD registered and CE certified product and can be applied for diagnostical purposes. For more details, please see instructions for use (IFU). The IFU can be downloaded from this webpage.
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Danger
Hazard Classifications
Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Carc. 1B - Muta. 2 - Skin Sens. 1
Storage Class
6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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Do 4% formaldehyde or 10% formalin solutions contain traces of methanol?
1 answer-
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Is it okay to fix an entire tissue with 4% PFA at 37°C overnight using product 1004960700 without altering its morphology?
1 answer-
The temperature used for standard tissue processing historically has been room temperature. Temperature can affect the rate of fixation, and modern tissue processors may use elevated temperatures to reduce processing time without adverse effects on tissue morphology. Cold fixation is common in electron microscopy when using glutaraldehyde as a fixative.
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