Creation date: February 7, 2013
Revision date

Safety Data Sheet
1. Identification of the substance or mixture and of the supplier
Product name：

Vitrified Bond Wheels：

Reference number：Company name：
Address

WA Grinding Wheel

MSDS-WA Grinding Wheel
Kure Grinding Wheel, Co., Ltd：

3-20 2-chome, Yoshiura-shinmachi, Kure-shi, Hiroshima Pref. 737-8518, Japan

Recommended use and restrictions of operation ： For grinding metal and non-metal

２．Hazard identification
Vitrified bond wheels are mixtures of abrasive grains and vitrified material. The hazard statements are stated as below:
The hazardous statements of substances which are components of grinding wheels, are listed by
Global Harmonized System classification as below, which apply Industrial Safety and Health Act Article 57-2
and Law concerning Pollutant Release and Transfer Register in Japan.
・Hazards：

If grinding wheel burst during operation and pieces of an accidentally broken wheel hit a person,
it may cause injury or death.
Sparks generated by grinding can cause burn wound and fire.

・Environmental effects：

Dust generated by grinding can contaminate the working environment.

GHS classification of the mixtures
Aluminum Oxide

Amorphous Silica

Diboron Trioxide

Not applicableNot applicableNot applicableNot classified
Not applicableNot applicableNot applicableNot applicableNot applicable

Category 5
Category 3
Category 2A or 2B

Specific target organ and systemic toxicity Category 3 (Respiratory tract irritation）
following single exposure

Not applicable

Category 3 (Respiratory tract irritation）

Specific target organ and systemic toxicity Category 1 (Inhalation: Lungs）-Repeated exposure

Not applicableNot applicable

Physical hazards
Health hazards
Acute toxicity (Oral)
Skin corrosion/irritation
Serious eye damage/eye irritation

Environmental hazards

Not applicableNot applicableNot applicableLabel elements
Name of the substanceAluminum Oxide

Amorphous Silica

Diboron Trioxide

PictogramNo dataDangerSignal word

Warning

No data

May be harmful if swallowed

Causes damage to organs through prolonged orrepeated exposure (Inhalation: Lungs)
No data

Hazards statements

Causes serious eye irritation(Respiratory tract irritation) May cause
respiratory irritation

Causes mild skin irritation(Respiratory tract irritation) May cause
respiratory irritation

３．Composition/information on ingredients＜Identification of the substance＞Classification of hazardous substances and mixtures : Mixture of silicon carbide and vitrified material.
Information on ingredients
NameMolecular formula orstructural formula

Industrial Safety and Health Act Cabinet Order Number
or Chemical Substances Control Law Class Reference
Number in the Gazette List of Japan

ＣＡＳnumberRegulatory information

Aluminum Oxide
Amorphous Silica, Silicon
Dioxide

Al2O3

189

(1)-231344-28-1

Industrial Safety and Health Act

SiO2312(1)-54860676-86-0

Industrial Safety and Health Act

Diboron Trioxide

B2O3196(1)-711303-86-2Industrial Safety and Health Act (of Japan)

Note: The weight percent will be less than 1% if converted to boron (B), which is not applicable for PRTR Law's reporting requirement.

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４．First-aid measures
If inhaled: If inhaled dust, immediately remove person to fresh air, rinse mouth with plenty of water, and keep comfortable for breathing.

If on skin

: Do not rub, and wash affected area with soap and water after handling.

If swallowed: Do not induce vomiting.

If a part of the grinding whheel or workiece hit directly a human: （If a high-speed rotating grinding wheel burst during operation and a part of the grinding wheel or workpiece hit directly the human body. )Expected immediate and delayed symptoms: If inhaled dust or mist of grinding fluid during operation, it may cause respiratory irritation; through prolonged

Mosr important singns and symptoms: If sparks from workpieces or chips blasted into the eye, it may cause oscular tissue damage such as burn injury.

Protection for first-aiders: Stop the machine before providing first-aid.

exposure it may cause pneumoconiosis, delayed symptoms or damage to lungs.

Precautions for doctors: Grinding wheels have abrasive grains with cutting edges on the surface, which may cause incised wound if contacted with human body.

５．Fire-fighting measures
Extinguishing media: This product does not combust itself.

Unsuitable extinguishing media: No information

Unsuitable extinguishing media: Not applicableSpecific ways to extinguish: Not applicable

Protective equipment for fire-fighters: Not applicable. Use of suitable protective equipment is preferable.

６．Accidental Release Measures
Personal precautions: If dust, etc. got in eyes, rinse cautiously with water for several minutes.

Protective equipment and emergency procedures: When recovering dust, wear protective equipment (such as eye and respiratory protections). Wash hands after handling.

Environmental precautions: Do not emit grinding chips to surface water. Dissolvement of controlled substances in soil and water may occur.

Recovery / neutralization: Not applicable

Second disaster: Not applicable

７．Handling and storage
Handling: Before operation, read safety material of the product and related equipments, and do not handle until all safety precautions have been read andunderstood.

Technical measures

・Do not involve replacement of grinding wheels or their test runs without receiving Special Education.
・Check if the Maximum Operation Speed and the diameter marked on the grinding wheel are adequate for the machine.
・Prior to mounting, all grinding wheels shall be performed visual inspection and ring test for crack, and chipping.
・Select proper flanges when mounting grinding wheels, and don't tighten the nut excessively.
・Make a test run for one minute or longer before commencing the work for the day and for three minutes or longer when replacing a grinding wheel.
・When mounting grinding wheels to flanges, always perform visual inspection and ring test to check there is no defect.
・Always use flanges of materials and diameter according to legal requirement.
・Do not use the side surfaces of a grinding wheel except for a grinding wheel designed for use of their side surfaces.
・Furnish with required safety devices (ex. protection covers).
Local exhaust ventilation and general ventilation
Precautions for safe handling: Provide local exhaust ventilation or general ventilation during grinding operation where dust is generated.

: 1. Do not drop wheels.
2. Do not bump wheels.
3. Do not roll wheels.
4. Avoid human contact with abrasive wheels during operation.

Technical measures: Abrasive wheels should be stored in a dry area in rooms not subject to extreme temperature changes since somebonds may be affected by excessive humidity, dampness and extreme temperature differentials.
They should be stored on surface plates or in racks.

Incompatible materials: Not applicable

Conditions for storage: Grinding wheels shall be stored in rooms at normal temperatures and humidity. Grinding wheels shall not be stored subject to freezing temperature.

Packing material: Use material to absorb shocks when grinding wheels are handled.

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８．Exposure controls/personal protection
Standard Control Concentration: ３．０ｍｇ／m3

Occupational Exposure Limits (OELs): Class 2 Respirable dust＝１ｍｇ／ｍ3

Industrial Safety Health Act

Total dust 4mg/m3

Japan Society for Occupational Health (2005)

Occupational Exposure Limits (OELs) for composed substances: Aluminum Oxide: ACGIH TLV-TWA 10mg/m3 (Do not include asbestos nor ≥1% crystalline silica.)

Amorphous Silica: No data

Diboron Trioxide:TLV-TWA 10mg/m3

Engineering control: To control dust, install dust collectors or use general ventilation if appropriate.

Protective equipments: Workers must wear the protective equipments as follows:

Take measures for the sparks not to reach dust collectors , as it could ignite a fire.

Hygiene measures

Respiratory protection: Dust protective mask with national test certificate

Protection with hands: Spark resistant gloves.

Eye protection: Fully protective dust-proof glasses.

Hearing protection: Hearing protection should be worn where required.

Skin and body protection: Wear helmet, safety shoes and standard work clothes.

Protective clothing: Wear work clothing of spark resistant material.

: Installation of water washing equipment is preferable for rinsing mouth or eyes.

９．Physical and chemical properties
Appearance (physical state, colour etc) : Grinding wheels are coloured articles, solid, the volume density is 1.4-2.5g/cm3, and insoluble in wate
The physical and chemical properties of each substance are as below
Amorphous Silica
Aluminum Oxide
Diboron Trioxide
Appearance (physical state,Colourless, hygroscopic, brittle, vitreous lumps
colour etc)
or hard white crystals, with slightly bitter taste
Colourless amorphous powder White crystalline power
Odour

No data

OdourlessOdourless

pHNo data

No data

5.1 at 20°C, 1.0% solution

Melting point/freezing point

1610°C (Melting point)

2053 ℃

About 450°C (Melting point)

Boiling point, initial boiling

2230°C (Boiling point)

2980℃

About 1,860°C (Boiling point)

Flash point

Not combustible

Not combustible

Not combustible

Upper/lower flammability orNo data

No dataNot combustible

Vapour pressure1333Pa(1732℃)

0.073Pa (mp.)

Negligible at 20 °C

Vapour density (air=1)

No data

No data

No data

Relative density

2.5

3.97

2.46 (Crystal)

Insoluble in water

Insoluble in water
Slightly soluble in non-polar organic solvents

Partition coefficient: n-No data

No data

Auto-ignition temperature

Not combustible

Not combustible

No data
Not combustible

Decomposition temperature

No data

No data

No data

Odour threshold

No data

No data

No data

Evaporation rate (Butyl Acetate = No data

Not applicableNot applicable

Flammability (solid, gas)

No data

Not combustible

Not combustible

Viscosity

No data

No data

Not applicableSolubility(ies)2.77g/100g water at 20 °C

１０．Stability and reactivity
Stability: Stable under normal conditions

Reactivity: None known

Conditions to avoid (e.g. static discharge, shock or vibration): High temperatures, high humidity or shocks

Incompatible materials: None known

Hazardous decomposition products: None known

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１１．Toxicological information
Aspiration toxicity of grinding wheels
If inhaled dust during grinding operation through prolonged exposure, it may cause pneumoconiosis.
Specific considerations concerning toxicological information of composed substances are as below
Aluminum Oxide
Amorphous Silica
Acute toxicity

Diboron Trioxide

Rat LDL0=5mg/kg

Category 5
May be harmful if swallowed

Dermal No data

Physical irritation may occur although specific datacannot be found.

No dataInhalatio No datan(Dusts,mists)

Rat: LCL0=2190mg/m3/4H

Classification not possible

Rat: LD50 > 5000mg/kg

OralSkin corrosion/irritation

No data

Physical irritation may occur although specific datacannot be found.

Category 3
Rabbit: Erythema ((ACGIH (2001))
Humans: The substance irritates the skin (ICSC (1994))

Serious eye damage/eye irritation

No data

The substance has potential to cause irritation.Rabbit:
25mg/24H

Respiratory or skinsensitization

No data

No dataCategory 2A or 2B
Causes serious eye irritation
Animal: Conjunctivitis
Human: Redness, pain; The substance irritates the eyes.
No dataGerm cell mutagenicity

Lack of data

No data

No data

Carcinogenicity

ACGIH: A4 (Not classifiable as ahuman carcinogen)

IARC Classification: 3 (Not classifiable as tocarcinogenicity in humans)

No data

Reproductive toxicity

No data

No information

No information

Specific target organ andCategory 3 (Respiratory tractsystemic toxicity following irritation) Upper respiratory tract
single exposure
irritation (ICSC (2000))

No information

Category 3
May cause respiratory irritation
Humans: Irritation of nose or throat; respiratory
symptoms such as cough, stuffiness, dyspnea, and sorethroat.

Category 1
Specific target organ andsystemic toxicity -Repeated Pulmonary fibrosis (Occupationalexposure) (EHC (1997))
exposure

No information

Lack of dataNo dataNo data

Causes damage to organs throughprolonged or repeated exposure(Inhalation: Lungs)
Aspiration hazard

No data

１２．Ecological information
Persistence and degradability : No findings
Bioaccumulative potential
Mobility in soil

: No findings: No findings

Other adverse effects : Grinding chips (including dust and mist） are generated during cutting and grinding.
Specific considerations concerning toxicological information of composed substances are as below.
Diboron Trioxide
Amorphous Silica
Aluminum Oxide
Acute hazards to the aquaticenvironment
Lack of data
Long-term hazards to theaquatic environment

Lack of data

Lack of data

Crustacea (Daphnia magna): 48 hours EC50 = 370 - 490
mg/L (IUCLID (2000))
Concentration equivalent: 2382-3155 mg/L

Lack of data

Water solubility 27700mg/L (HSDB (2004))
Low acute aquatic toxicity

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１３． Disposal considerations
Waste from residues : For proper disposal, follow the related regulations and standards of local authority.
Contract with authorized industrial waste disposal contractor with contents clarification.
Sort the waste into glass, concrete and ceramic wastes and dispose as industrial waste.
May elute into soil or water.
Contaminated container and packaging : No findings

１４．Transport information
International regulation
Regulatory information on sea transportation ：Not regulated as dangerous goods
Regulatory information on air transportation ：Not regulated as dangerous goods
Domestic regulation
Regulatory information on ground transportation： No regulatory information
Regulatory information on sea transportation ：Not regulated as dangerous goods
Regulatory information on air transportation ：Not regulated as dangerous goods
Special precautions ：Keep dry and be aware not to damage the packaging.
・ Use container with inner packaging, to absorb some degree of pressure, shocks, and of damp-proof property.
・ Handle grinding wheels carefully to prevent damaging.
・ Transport grinding wheels without rolling, dropping and bumping. As they are breakables, do not through or drop.
・ Report the manufacturer or users in case they have possibly given unusual shocks or pressures.

１５．Regulatory information
Industrial Safety and Health Act, Japan・Dangerous and Toxic Substances Subject to Notify Their Names(Article 57-2, Enforcement Order 18-2, Appended Table 9)・Special Education pertaining work involving replacement of grinding wheels(Article 59-3, Rules on Special Education for Safety and Health, Article 1)・Precaution for handling (Ordinance on Industrial Safety and Health, Part II)
・Provided with safety devices (Article 13 of the Order for Enforcement of the Industrial Safety and Health Act)
Ordinance on Prevention of Dangers Due to Dust, Japan : Dust work(Chapter 1 Article 2)
Safety requirement for use, care and protection of abrasive wheel and grinder, Japan : Operating and manufacturing precautions
Law concerning Pollutant Release and Transfer Register, Japan : Not applicable
Soil Contamination Countermeasure Act, JapanWater Pollution Control Act, Japan

１６．Regulatory information
Other information[Safety Manual for Grinders]Japan Industrial Safety & Health Association , Japan Society for Occupational Health , ACGIH (American Conference of Governmental Industrial Hygienists)
http://www.jaish.gr.jp/user/anzen/kag/kag_main01.html
Kure Grinding Wheel, Co., Ltd makes no warranty with the content or Physical and Chemical Properties of any specific substance as described in this Material Safety Data Sheet.
Users must be responsible for handling the data with precautions, as the evaluation of hazardous properties of substances is based on the materials, information and data available asof the date this Material Safety Data Sheet was created by Kure Grinding Wheel, Co., Ltd, however, the materials, information and data are not exhaustive.

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