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Silicon nitride

Basic information Description References Safety Related Supplier

Silicon nitride Basic information

Product Name:
Silicon nitride
CAS:
12033-89-5
MF:
N4Si3
MW:
140.2833
EINECS:
234-796-8
Mol File:
12033-89-5.mol
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Silicon nitride Chemical Properties

Melting point:
1900 °C
Density 
3.44 g/mL at 25 °C(lit.)
refractive index 
2.8
RTECS 
VW0650000
form 
powder
color 
Pale gray
Specific Gravity
3.44
Water Solubility 
Insoluble water.
Hydrolytic Sensitivity
1: no significant reaction with aqueous systems
Merck 
14,8497
Stability:
Stable.
CAS DataBase Reference
12033-89-5(CAS DataBase Reference)
EPA Substance Registry System
Silicon nitride (Si3N4) (12033-89-5)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
37
Safety Statements 
22-24/25
WGK Germany 
3
10
TSCA 
Yes

MSDS

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Silicon nitride Usage And Synthesis

Description

Silicon nitride (molecular formula Si3N4) is a kind of chemical compound comprised of both silicon and nitrogen elements. It appears as a white solid with a high melting point. It is chemically stable upon the presence of dilute HF and hot H2SO4. It has a series of properties such as high strength among a wide temperature range, high fracture toughness, high hardness, outstanding wear resistance and chemical property. It has a strikingly high thermal shock resistance. It has a wide applications in various kinds of fields. In automobile industry, it is an important materials for engine parts. It can also be applied to the manufacturing of bearings due to its high shock resistance. For example, in spacecraft, silicon nitride ceramic is capable of surviving the severe thermal shock generated in the hydrogen/oxygen rocket engines. It can also be used as abrasive and cutting tools due to its harness and resistance to wear. In electronics, it can be used as an insulator and chemical barrier during the production of integrated circuits. There are several method for the manufacturing the silicon nitride. 1. The powdered silicon is subject to a heating reaction of 1300-1400 °C in the atmosphere of nitrogen. 2 Diimide route which involves the reaction of SiCl and NH3. 3 Silicon dioxide is subject to carbothemral reduction at 1300-1400 °C under the presence of nitrogen.

References

https://en.wikipedia.org/wiki/Silicon_nitride
http://accuratus.com/silinit.html

Chemical Properties

slightly beige powder

Uses

As high tempereture engineering material for use in gas turbines, diesel engines.

Uses

Silicon nitride (Si3N4), resistant to oxidation, is an excellent coating for metals, as well as an adhesive and abrasive, and it is used in high-temperature crucibles. It has proven useful as heat-resistant substance for the nozzles on rocket engines.

Silicon nitride Preparation Products And Raw materials

Preparation Products

Raw materials

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Silicon nitrideSupplierMore

Sense Chemicals (Shanghai) Co., Ltd. Gold
Tel:
+86 13590492756;+86 18603078161;+86 (0)21 57622175
Email:
michael.he@sensechemicals.com;admin@sensechemicals.com
Products Intro:
Product Name:Silicon nitride
CAS:12033-89-5
Purity:>=97% Package:5G;25G;100G;1KG;5KG
Forsman Scientific ( Beijing ) Co., Ltd. Gold
Tel:
10-64646565
Email:
info@forsman.com.cn
Products Intro:
Product Name:Silicon nitride powder (Si3N4)
CAS:12033-89-5
Purity:97%;0.5μm Package:1kg;5kg Remarks:<1 μm;1.5μm
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Products Intro:
Product Name:Silicon(IV) nitride, < 5 micron (99%-Si)
CAS:12033-89-5
Purity:(99%-Si) Package:250g;50g
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
Products Intro:
Product Name:SILICON NITRIDE, powder
CAS:12033-89-5
Package:25g Remarks:SIS6972.0
Alfa Aesar
Tel:
400-610-6006; 021-67582000
Email:
saleschina@alfa-asia.com
Products Intro:
Product Name:Silicon(IV) nitride, Electronic Grade, 99.85% (Metals basis), 90+% ^a-phase
CAS:12033-89-5
Package:10g Remarks:049113
Basic information Description References Safety Related Supplier