Pyridine, an organic compound with the chemical formula C5H5N, is a six-membered heterocyclic compound containing a nitrogen heteroatom. It can be regarded as a compound in which one (CH) in the benzene molecule is substituted by N, so it is also called nitrobenzene. It is a colorless or slightly yellow liquid with a stench.
Foreign name: pyridine
Alias: Azabenzene
Chemical formula: C5H5N
Molecular weight: 79.102
CAS login number: 110-86-1
EINECS accession number: 203-809-9
Melting point: -41.6 ℃
Boiling point: 15.3℃
Water soluble: Soluble
Density: 0.983 g/cm³
Exterior: Colorless liquid
Flash point: 20 ℃ (closed)
Application: Used in the manufacture of vitamins, sulfonamides, pesticides and plastics, etc.
Security description: S7; S16; S22; S24/25; S26; S28; S36/37/39; S38; S45; S61
Hazard Symbols: F; Xn
Hazard description: R11; R20/21/22
UN Dangerous Goods Number: 1282
Physical properties:
Melting point: -41.6℃
Boiling point: 115.3℃
Flash point: 20℃
Density: 0.983g/cm3
Ignition temperature: 482℃
Upper explosion limit (V/V): 12.4%
Lower explosion limit (V/V): 1.7%
Critical temperature (℃): 346.85
Critical pressure (MPa): 6.18
Refractive index: 1.509 (20℃)
Appearance: colorless liquid
Solubility: Miscible with water, alcohol, ether, petroleum ether, benzene, oil and other solvents
Chemical properties:
Pyridine and its derivatives are more stable than benzene, and their reactivity is similar to that of nitrobenzene. Typical aromatic electrophilic substitution reactions occur at the 3 and 5 positions, but the reactivity is lower than that of benzene, and nitration, halogenation, sulfonation and other reactions are generally not easy to occur. Pyridine is a weak tertiary amine that can form water-insoluble salts with various acids (picric acid or perchloric acid, etc.) in ethanol solution. The pyridine used in industry contains about 1% of 2-methylpyridine, so it can be separated from its homologues by taking advantage of the difference in salt-forming properties. Pyridine can also form crystalline complexes with various metal ions. Pyridine is easier to reduce than benzene, such as reducing to hexahydropyridine (or piperidine) under the action of metal sodium and ethanol. Pyridine reacts with hydrogen peroxide and is easily oxidized to N-pyridine oxide.
Application
It is used in the manufacture of vitamins, sulfonamides, pesticides and plastics; it can also be used as an alkaline solvent, and it is also an excellent solvent for deacidification and acylation reactions; it can also be used as a carbonyl group for polymerization, oxidation, and acrylonitrile. It can also be used as a catalyst for chemical reactions, etc.; it can also be used as a silicone rubber stabilizer, a raw material for anion exchange membranes, etc.
3-Bromopyridine,4-Methoxypyridine,Intermediates 2-Chloro-3-formyl-6-picoline,5-Bromo-2-methyl-3-nitropyridine Fuxin Custchem Fine Chemical Co., Ltd. , https://www.custchemvip.comProduct Description--solid tyre:
1)Deep tread pattern ,high load,large ground contact acreage.
2)strong traction.excellent wear-resistance
3)High quality raw material suppory and unqiue formula design
4)this tyre enjoys outstanding performance at all aspects
5)it's the best choice for balanced forklift and other industrial vehicles.
Brand :ROCKBUSTER
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Size
Standard Rim
Overall Dia(mm)
Section Width(mm)
MAX.LOADV(KG/KPA)
Weight(KG)
QTY/
20'GP
6mph/10km/h
10mph/16km/h
15mph/25km/h
Load
Steer
Load
Steer
Load
Steer
8.15-15(28×9-15)
7.00
700
215
4060
3125
3710
2855
3445
2650
62.16
230
8.25-15
6.50
818
203
5085
3910
4640
3570
4310
3315
88.08
200
8.25-12
6.50
735
206
3326
2660
3215
2410
2905
2995
65.63
210
7.00-12
5.00S
654
170
3105
2390
2835
2180
2635
2025
47.18
400
6.50-10
5.00F
570
156
2715
2090
2485
1910
2310
1775
34.19
590
7.00-9
5.00S
550
168
2670
2055
2440
1875
2260
1740
34
520
6.00-9
4.00E
525
146
1975
1520
1805
1390
1675
1290
27
760
18×7-8
4.33R
455
158
2430
1870
2215
1705
2060
1585
21
900
21x8-9
6.00
535
189
2810
2250
2715
2035
2530
1895
33
300
23x9-10
6.50
597
230
4005
3205
3845
2885
3605
2705
46.5
270
3.00-15
8.00
838
258
5990
4700
5780
4335
5380
4037
107
160
Forklift Hard Rubber Solid Tyre
Model NO.: 7.00X12 6.00-9
Cord Material: Cotton
Inner Tube: Tubeless
Customized: Non-Customized
Condition: New
Name: Solid Tire
Size: 8.25-15, 28*9-15, 7.00-9, 7.00-12, 6.50-10
Characteristic: Deep Tread Pattern, High Load
Advantage: Strong Traction.Excellent Wear-Resistance
Price: Reasonable
Delivery Time: Within 2 Weeks
Cetification: CCC, ISO, DOT, SGS
Trademark: ROCKBUSTER
Specification: Standard: ISO CCC DOT SGS
Origin: China
HS Code: 4012