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156-83-2

Basic Information
CAS No.: 156-83-2
Name: 4-Chloro-2,6-diaminopyrimidine
Article Data: 14
Molecular Structure:
Molecular Structure of 156-83-2 (4-Chloro-2,6-diaminopyrimidine)
Formula: C4H5ClN4
Molecular Weight: 144.564
Synonyms: Pyrimidine,2,4-diamino-6-chloro- (6CI,7CI,8CI);2,6-Diamino-4-chloropyrimidine;6-Chloro-2,4-diaminopyrimidine;6-Chloropyrimidine-2,4-diamine;NSC 8818;
EINECS: 205-863-9
Density: 1.564 g/cm3
Melting Point: 199-202 °C(lit.)
Boiling Point: 438.3 °C at 760 mmHg
Flash Point: 218.9 °C
Solubility: slightly soluble in water
Appearance: white cyrstalline solid
Hazard Symbols: IrritantXi,HarmfulXn
Risk Codes: 22-36/37/38
Safety: 26-24/25
PSA: 77.82000
LogP: 1.45680
Synthetic route
56-06-4

2,6-diaminopyrimidin-4-ol

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With trichlorophosphate at 97℃; for 17h;85%
With trichlorophosphate for 3h; Reflux;73%
14989-30-1

hypochloric acid

56-06-4

2,6-diaminopyrimidin-4-ol

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With sodium hydroxide; potassium carbonate; trichlorophosphate In tetrahydrofuran; water; acetone47.3%

2,4-diamino-6-chloropyrimidine hydrochloride

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With pyrographite In water at 70℃;
83170-03-0

2-amino-4-chloro-6-guanidinopyrimidine

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With ammonia In ethanol at 190℃;
100643-27-4, 143504-99-8

2,6-diamino-3H-pyrimidin-4-one

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With trichlorophosphate
10132-07-7

4-amino-2,6-dichloropyrimidine

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With ethanol; ammonia at 160℃;
56-05-3

2-Amino-4,6-dichloropyrimidine

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With ethanol; ammonia at 160℃;
3764-01-0

2,4,6-trichloropyrimidine

A

1004-38-2

2,4,6-triaminopyrimidine

B

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
With ethanol; ammonia at 160℃;
3764-01-0

2,4,6-trichloropyrimidine

7664-41-7

ammonia

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
at 160℃;
10132-07-7

4-amino-2,6-dichloropyrimidine

7664-41-7

ammonia

156-83-2

6-chloro-pyrimidine-2,4-diyldiamine

Conditions
ConditionsYield
at 160℃;
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Chemistry

IUPAC Name: 6-chloropyrimidine-2,4-diamine 
Empirical Formula: C4H5ClN4
Molecular Weight: 144.5623g/mol
EINECS: 205-863-9 
Structure of 4-Chloro-2,6-diaminopyrimidine (CAS NO.156-83-2):

Index of Refraction: 1.702 Molar
Refractivity: 35.8 cm3
Molar Volume: 92.3 cm3
Polarizability: 14.19×10-24cm3
Surface Tension: 88.1 dyne/cm
Density: 1.564 g/cm3
Flash Point: 218.9 °C
Enthalpy of Vaporization: 69.5 kJ/mol 
Melting Point: 199-202 °C(lit.)
Boiling Point: 438.3 °C at 760 mmHg
Vapour Pressure: 7.01E-08 mmHg at 25°C 
Solubility: slightly soluble 
Product Categories: PYRIMIDINE;Pyridines, Pyrimidines, Purines and Pteredines;Heterocyclic Compounds;Pyrimidines;Bases & Related Reagents;Heterocycles;Nucleotides 
Canonical SMILES: C1=C(N=C(N=C1Cl)N)N
InChI: InChI=1S/C4H5ClN4/c5-2-1-3(6)9-4(7)8-2/h1H,(H4,6,7,8,9)
InChIKey: QJIUMVUZDYPQRT-UHFFFAOYSA-N

Safety Profile

Hazard Codes: HarmfulXn,IrritantXi
Risk Statements: 22-36/37/38
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-24/25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3
Hazard Note: Irritant
HS Code: 29335995

Specification

  4-Chloro-2,6-diaminopyrimidine , its cas register number is 156-83-2. It also can be called 2,4-pyrimidinediamine, 6-chloro- ; 6-chloropyrimidine-2,4-diamine ; 2-amino-4-chloro-6-methyl pyrimidine . 4-Chloro-2,6-diaminopyrimidine (CAS NO.156-83-2) is a white cyrstalline solid.