Skip to Content
Merck
All Photos(1)

Key Documents

8.01111

Sigma-Aldrich

4-Aminopyridine

for synthesis

Synonym(s):

4-Aminopyridine, 4-Pyridylamine

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
4-(NH2)C5H4N
CAS Number:
504-24-5
Molecular Weight:
94.11
MDL number:
MFCD00006439
UNSPSC Code:
12352116
EC Index Number:
207-987-9
NACRES:
NA.22

Quality Level

200

Assay

≥98.0% (GC)

form

crystals

autoignition temp.

640 °C

potency

21 mg/kg LD50, oral (Rat)

bp

274 °C/1013 hPa

mp

157-160 °C

transition temp

flash point 156 °C

solubility

soluble 83 g/L

density

1.26 g/cm3 at 25 °C

storage temp.

2-30°C

InChI

1S/C5H6N2/c6-5-1-3-7-4-2-5/h1-4H,(H2,6,7)

InChI key

NUKYPUAOHBNCPY-UHFFFAOYSA-N

Application

4-Aminopyridine for synthesis. CAS 504-24-5, chemical formula 4-(NH₂)C₅H₄N.

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Melting range (lower value): ≥ 157 °C
Melting range (upper value): ≤ 160 °C
Identity (IR): passes test

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Oral - Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

312.8 °F

Flash Point(C)

156 °C

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service