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Safety Data Sheet EN

Silicon powder, crystalline

CAS 7440-21-3
EC 231-130-8

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Silicon powder, crystalline
Product Code
00311

Regulatory Identifiers

CAS Number
7440-21-3 Check regulations →
EC Number
231-130-8 Check regulations →

Identified Uses

SU24 Scientific research and development

Manufacturers & Suppliers

Alfa Aesar logo

Alfa Aesar

manufacturer

30 Bond Street Ward Hill, MA 01835-8099

www.alfa.com

Emergency Contacts

Alfa Aesar

(800) 343-0660

Monday-Friday, 8am-7pm EST

Carechem 24

(866) 928-0789

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified warning

Hazard Classifications

Flam. Sol. Cat. 2 H228

GHS Pictograms

GHS02 - Flammable

GHS02

Hazard Statements

H228 Flammable solid.

Precautionary Statements

P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/equipment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P312 Call a POISON CENTER/doctor/physician/if you feel unwell.
P370+P378 In case of fire: Use for extinction: CO2, sand, extinguishing powder.

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance

Substances

Chemical Name CAS Number Concentration Hazardous
N/A --- 100% No
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Supply fresh air. If required, provide artificial respiration. Keep patient warm.

Skin contact

Immediately wash with water and soap and rinse thoroughly.

Eye contact

Rinse opened eye for several minutes under running water. Then consult a doctor.

Ingestion

Seek medical treatment.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

The data for this section has not been processed yet.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

The data for this section has not been processed yet.

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

The data for this section has not been processed yet.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.

Hands

Impervious gloves. Check protective gloves prior to each use for their proper condition. The selection of suitable gloves not only depends on the material, but also on quality. Quality will vary from manufacturer to manufacturer. Material of gloves Nitrile rubber, NBR. Penetration time of glove material (in minutes) Not determined.

Eyes

Safety glasses with side shields / NIOSH (US) or EN 166(EU).

Respiratory

Use suitable respirator when high concentrations are present. Recommended filter device for short term use: Use a respirator with type N95 (USA) or PE (EN 143) cartridges as a backup to engineering controls. Risk assessment should be performed to determine if air-purifying respirators are appropriate. Only use equipment tested and approved under appropriate government standards.

Skin/Body

Protective work clothing.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Vapor Density
Not applicable.
Vapor Pressure
Not applicable.
Voc Content
---
Boiling Point
2355 ℃ (4271 ºF)
Colour Intensity
---
Solubility In Water
Insoluble
Relative Density
Not determined.
Freezing Point
---
Lower Explosive Limit
Not determined
Softening Point
---
Solidification Point
---
Bulk Density
---
Flash Point
---
Odor
Odorless
Upper Explosive Limit
Not determined
Explosive Limits
---
Physical State Data
---
Form
---
Kinematic Viscosity
Not applicable.
Partition Coefficient
Not determined.
Colour
---
Relative Evaporation Rate
---
Cloud Point
---
Ph
Not applicable.
State Under Standard Conditions
---
Melting Point
1423 °C (2593 ºF)
Metal Corrosion
---
Odor Threshold
Not determined.
Physical State
---
Flammability
Highly flammable.
Solubility
---
Solubility In Fat
---
Density
2.33 g/cm3 (19.444 lbs/gal)
Properties Status
---
Dynamic Viscosity
Not applicable.
Appearance
Various forms (powder/flake/crystalline/beads, etc.)
Decomposition Temperature
Not determined.
Evaporation Rate
Not applicable.
Molecular Weight
---
Auto Ignition Temperature
Not determined.
Crystallisation Point
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

The data for this section has not been processed yet.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

The data for this section has not been processed yet.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
UN1346
Shipping Name
Silicon powder, amorphous
Transport Class
4.1
Packing Group
III
15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

The data for this section has not been processed yet.

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Frequently Asked Questions

Common questions about safety, handling, and properties

What is the hazard signal word for Silicon powder, crystalline?

The signal word is warning.

What is Silicon powder, crystalline used for?

SU24 Scientific research and development

What are the hazard statements for Silicon powder, crystalline?

This substance has 1 hazard statement:

  • H228: Flammable solid.

What is the melting point of Silicon powder, crystalline?

The melting point is 1423 °C (2593 ºF) and the boiling point is 2355 ℃ (4271 ºF).

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