Safety Data Sheet
Glass Wool
Creation Date: July 11, 2000
Revised Date: May 20, 2022
1. Product and Company Identification
Product Name:
Company Name:
Address:
Tel. No.:
Emergency Tel. No.:
Recommended Use:

Glass Wool
MAG-ISOVER K.K.
7, 3-Chome, Kojimachi, Chiyoda-ku, Tokyo, JAPANCall Center(81)3-288-6308
Quality Department(81)29-831-1011(1) Thermal insulation materials: For thermal insulation of boiler, tank,duct for air conditioning, various pipes and so on. For core materialof panel. Products are installed in the wall and attic for thermal
insulation, sound absorption and soundproof of building.
(2) Thermal insulation materials for dwellings(3) Sound absorbing materials

Limitations on Use:

(4) Decorative sound absorption boards: Interior decoration of thebuilding.
(5) For thermal insulation of industrial equipment
Cement reinforcing material

2. Hazardous Identification
GHS Classification
Physical Hazards:

Explosives
Flammable gases

Not classified
Not classified

Aerosols

Not classified

Oxidizing gases

Not classified

Gases under pressure

Not classified

Flammable liquids

Not classified

Flammable solids
Self-reactive substances and mixture

Not classified[Non-combustible (ICSC 2012]
Not classified

Pyrophoric liquids

Not classified

Pyrophoric solids

Not classified[Non-combustible (ICSC 2012)]
Not classified[Non-combustible (ICSC 2012)

Self-heating substances and mixture
Substances which, in contact
with water, emit flammable gases
Oxidizing liquids
Oxidizing solids

Human Health Hazards:

Not classified
Not classified

Organic peroxides

Not classified(No reaction observed)
Not classified

Corrosive to metals
Acute toxicity (oral route)
Acute toxicity (skin route)

Classification not possible
Classification not possible
Classification not possible

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Acute toxicity (inhalation, gas)

Not classified

Acute toxicity (inhalation, vapor)

Classification not possible

Acute toxicity (inhalation, dust)

Classification not possible

Acute toxicity (inhalation, mist)

Not classified

Skin inflammation / irritation
Serious eye damage / eye irritation

Not classified(Ex: temporary irritation)
Not classified

Respiratory sensitization

Classification not possible

Skin sensitization

Not classified (JHSA 2011)

Germ cell mutagenicity

Classification not possible

Carcinogenicity

Not classified(IARC 2002, Group 3)
Classification not possible

Reproductive toxicity

Environmental Hazards:
GHS Label Element
Pictogram or Symbol:
Signal Word:
Hazard Statement:
Precautionary Statement:

Specific target organ toxicity(single exposure)Specific target organ toxicity(repeated exposure)
Aspiration hazard
Hazardous to the aquatic environment

Not classified
Classification not possible
Classification not possible

Hazardous to the ozone layer

Classification not possible

Not classified

None
None
None
None

3. Composition / Information on Ingredients
Chemical Product or Compound
Common Chemical Name orGeneric Name:
Synonyms:

Glass wool fibers
MMMF (Man-made mineral fibers)
MMVF

Composition and content:
CAS Number:(Man-made vitreous fibers)

SVFs(Synthetic vitreous fibers)
Fibrous glass
90% or more
Thermosetting resin binder
10% or lessMineral oil
Less than 1%
Fibrous glass (wool)
No.: 65997-17-3

4. First-aid Measures
Inhalation:
Skin Contact:

Eye Contact:

If feeling sick, take medical treatment and seek the advice of a doctor.
If the product adheres to the skin, wash the affected area with soapy
water, then wash off with clean water or slightly warm water. If the skinarea feels sore or if there is some abnormality, seek medical attention
immediately.
If dust comes in contact with the eyes, do not rub eyes. Rinse with cleanwater until you no longer feel that you have something in your eye. If
the feeling persists, seek the advice of an eye doctor.
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Ingestion:
Most critical signs of Acute
Symptoms and Delayed
Symptoms:
Protection to those taking thefirst-aid measures:
Special cautions to doctors:

Rinse mouth out with water. If feeling sick, take medical treatment andseek the advice of a doctor.
Skin/eye: reddening, irritation, and/or pain.
Respiratory passage: discomfort.
No data available
No data available

5. Fire-fighting Measures
Extinguishing Media:
Extinguishing Media that are
Not Suitable:
Specific Hazard with regard to
fire-fighting:
Extinguishing techniquepeculiar to the material:
Special protection andprecautions for fire fighting:

Use appropriate extinguishing media depending on the kind ofneighboring fires.
None
Release of dust.
Remove the material from the fire area if it is not dangerous to do so.
Heat-resistant protective equipment should be used as stated in “8.
Exposure Control/Personal Protection”.

6. Accidental Release Measures
Personal Precautions,Protective Equipment andEmergency Measures:
Environmental Precautions:
Method and Materials for
Containing and Cleaning:

Preventive measures against
secondary accident:

Wear appropriate protective equipment (refer to “8. Exposure
Control/Personal Protection”) to avoid skin/eye contact with the productand do not inhale dust.
Dust shall not be scattered into the surrounding environment.
If the product is spilled on the floor, clean it up using an industrial
vacuum cleaner without scatting dust. Enclose the product in an empty
container or bag and seal the container or bag. Refer to “13. Disposal
consideration” for disposal.
Same as above

7. Handling and Storage
Handling
Technical Measures:
Safe Handling Advice:
Avoidance of Contact:
Hygiene Measures:

Ventilate for exhaust to keep atmospheric concentrations lower than
exposure limits.
Wear appropriate protective equipment (refer to “8. Exposure
Control/Personal Protection”) to avoid skin/eye contact with the productand do not inhale or swallow dust.
In addition to taking technical measures, preferentially use packed
products, products with covering material, high-performance products,
etc.
Do not eat, drink or smoke while working. After handling the material,
be sure to wash hands and other body parts which were exposed to thematerial..
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Storage
Storage Condition:

Place product in a bag to avoid dust release. For quality reason, productmust not contact with water. Also product shall be stored inside to avoid
high humidity and direct sunlight.
There is no restriction, but put the product should be put in a packaging
and container which are hard to be damaged.

Packaging Materials:

8. Exposure Control/Personal Protection
Adapted value
Exposure Limits:

Working Environment Evaluation Standards, Exposure Limits inAppended Table (effective as of July 1, 2009):
Glass wool products are considered as minerals, and for work places
falling under the regulations relating to dust, the respirable dust
exposure limit shall be 3.0mg/m3 since the free silica shall be 0%.
 E = 3.0 / (1.19 Q + 1)
(E: Exposure limit, Q:Percentage of free silica contained in the dust[%])Japan Society for
Occupational Health(Note 1)
(Note 2)

“Journal of Occupational Health” Volume 63 (2021):
Glass wool: 1 (fiber) / ml
Dust permissible concentration: ● Respirable dust
● Total dust

2 mg/m3
8 mg/m3

Although the permissible concentration is regulated as the number of fibers, thismainly indicates the value for skin irritation. Dust is classified into Types 1, 2, 3 andasbestos dust, and the permissible concentrations are regulated for each class. Glassfiber dust is considered as Type 3 inorganic dust which has the highest permissible
concentrations.

ACGIH:(Note 1)
(Note 2)Engineering Measures:
Personal Protective Equipment
Respiratory Protection:

Hand Protection:
Eye Protection:
Skin and Body Protection:

American Conference of Governmental Industrial Hygienists (ACGIH)(2010), Threshold Limit Values (TLV)
TLV-TWA : 1 f / cc (glass wool)

Fibers with a length of 5 μm or more and an aspect ratio (length / diameter) of 3 or
more
TLV (Threshold Limit Value) - TWA (Time Weighted Average) is the time-weighted
average permissible concentration, which is defined as the time-weighted average
permissible concentration during a working time of 8 hours a day, 40 hours a week.
Known as the airborne concentration (8 hour average value), this is the concentration
at which the majority of workers, even if repeatedly exposed to this concentration
every day, will not develop any adverse health effects.

If dust is scattered during handling, install ventilating equipment tokeep dust level lower than the permissible concentration.

If the concentration of dust in the working environment can be expected
to exceed the limits given above, wear a dust mask. It is recommended
that for situations with high concentrations of dust, a replaceable type
dust mask should be used, while a disposable dust mask should be used
when the concentrations are relatively low.
Wear appropriate protective gloves.
If necessary, protective equipment appropriate for the work should be
utilized, such as goggles or protective glasses with side shields.
Protective equipment appropriate for the work should be used, such as
loose-fitting long-sleeved work clothing.

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9. Physical and Chemical Properties
Form:
Color, etc.:
Odor:

Melting Point and Freezing
Point:
Boiling Point, Initial Boiling
Point and Boiling Range:
Flammability:
Lower explosive limit and upper
explosive limit / Combustible
limit:
Flash Point:
Auto-ignition temperature :Decomposition Temperature:
pH:
Kinetic viscosity:
Solubility:n-octanol / Water Partition
Coefficient:
Vapor Pressure:
Density and / or relative density:
Relative gas density:
Particle characteristics:

Fibrous solid (ICSC 2012)
White or coloredClassification is not possible. Some odor may be senses in some cases
where bad conditions, such as wet environment and insufficientventilation, are combined; however, it has been reported that such odor
could be suppressed after drying and ventilation.
No data available
No data available
No data available

No data available
Non-combustible (ICSC 2012)
Non-combustible (ICSC 2012)
No data available
No data available
Not applicable
Water: insoluble (HSDB 2012)
Low (HSDB 2012)
Low (ICSC 2012)
2.4-3.0 g/cm3 (true specific gravity) (HSDB 2012)
Not applicable
No data available

10. Stability and Reactivity
Reactivity:
Stability:
Hazardous Reaction Potential:
Condition to Avoid:
Incompatible Products:
Hazardous Decomposition
Products:

No data available
Products are stable under the normal condition.
No data available
No data available
No data available
No data available

11. Toxicological Information
Acute toxicity
Oral route:
Skin route:Inhalation:

No data available
No data available
Inhalation (gas)Inhalation (vapor)
Inhalation (dust)

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Solid in room temperature
No data available
No data available

Skin Corrosion Property/
irritation:

Serious eye damage/eye irritations:

Respiratory Organs
Sensitization and Skin
Sensitization:

Skin Sensitization:
Germ Cell Mutagenicity:
Carcinogenicity:
Reproductive Toxicity:
Specific target organ toxicity(single exposure):

Specific target organ toxicity(repeated exposure):
Aspiration Respiratory
Organs Hazard:

Not classified
As a result of the 24-hour patch test on 43 subjects (adult males
and females), using a glass wool sample, performed by Japan
Hair Science Association (JHSA), it was found that none of thesubjects had any reaction to the sample within the 24 hours following
its removal.
[ Reference information from foreign literatures ]: (MHLW) Due to occupational exposure, workers may suffer from skinirritation in response to physical stimulus; however, the impact
on the skin is temporary and can be controlled under proper
work practices (ACGIH 2001).
 The physical irritation is mostly caused when tested fibers havea diameter of 4.5-5 μm or larger. However, the irritation often
goes away while continuously being exposed [EHC77 (1988)].
 According to the analysis by the Finnish Institute of Occupational
Health on the occupational disease registry data, contact
dermatitis due to skin irritation is caused in a rate of only several(1 to 9 persons) per 100,000 workers. Accordingly, the irritation is
not regarded as a common cause of contact dermatitis as a resultof occupational exposure (HSDB 2005).
Not classified
Some cases of transient eye irritation have been individuallyreported by workers, especially those who were not sufficiently
protected from exposure. However, the damage is neither serious
not chronic (ACGIH 2001, ATSDR 2004), and it was attributable
to a foreign object that got in the eye but not caused particularly
by the glass fiber dust (No incident reported). Therefore, “Notclassified” is noted in this section.
No data available
In human studies, it is reported that inhalation of glass fibers
may produce a temporary mechanical irritation of the nose andupper respiratory tract but this irritation was noted whenairborne concentrations exceeded 1 f/cc (ACGIH 2001).
Not classified (JHSA 2011)
Classification not possible
Not classified (Classified to Group 3 in IARC 2002)
No data available
Not classified
No cases of physical damage have been reported. It is assumed
that further damage can also be prevented by paying attention to
the cautions in “7. Handling and Storage” and “8. Exposure
Control/Personal Protection”.
Not classified (according to the same reason described above)
No data available

6 / 812. Ecological Information
Ecotoxicity:

No data available

Persistence and degradability:

No data available

Bioaccumulative potential:

No data available

Mobility in soil:

No data available

Ozone Depleting Potential:

No data available

13. Disposal Consideration
Information on safe andenvironmentally desirable
disposal and recycling ofchemicals, contaminatedcontainers and packaging:Contaminated Containers or
Packaging:

When disposing of the residual waste, dispose of in accordance with thelaw and local regulations. When the industrial waste management
contractors with the permission of the Metropolitan / Prefectural
governors or the local government handle the waste, entrust them withthe disposal.
Appropriately recycle, or dispose of the packaging according to the law
concerned and the standard of the local government.

14. Transport Information
UN Number:
Proper Shipping Name
(International transport name):
UN Classification:
Packing Group:
Special Safety Measures
regarding transportation andtransportation method:

Information on domestic
regulations:Not applicableNot applicableNot regulated as dangerous goods by definition of UN
Recommendation
Not applicable

When transporting the products, avoid direct contact with sunlight.
When loading the products, be careful not to damage, to corrode and/or to leak the container. Collapse shall be avoided and preventing
action shall be taken. Do not put heavy goods on the product.
Not applicable

15. Regulatory Information
Name and Information of
applicable regulations
Pneumoconiosis Law:
Ordinance on Prevention ofHazards due to Dust (Dust
Ordinance):

Glass wool is considered as a mineral under the Pneumoconiosis Law
and under the Ordinance on Prevention of Hazards due to Dust (Dust
Ordinance). When conducting the following work, the Pneumoconiosis
Law and Dust Ordinance will apply.
(1) Work carried out in places where the mineral (this product) is
being cut, chiseled or finished. (Dust Ordinance; Item 6 of
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Industrial Safety and Health
Act:

Pollutant Release and Transfer
Register :Attached Table 1)(2) Work carried out in places where motive power is being used
for cutting, crushing or screening the mineral (this product).
(Dust Ordinance; Item 8 of Attached Table 1)
Notified substance:-Glass wool is an applicable substance under Article 57-2 “Issuing ofDocumentation” and Article 57-3 “Investigation of Toxicity of Chemical
Substances” of the Occupational Safety and Health Act. In accordancewith the requirement of Article 57-3, an investigation of toxicity shall be
undertaken in advance at each business location as follows;(1) When newly using the material,(2) When employing a new handling instruction or method,(3) When there is a change in handling instructions or methods.
-Mineral oil
Glass wool is not a substance applicable under the PRTR (Pollutant
Release and Transfer Register) Regulations.

16. Other Information
Reference Documents:

The reference data used in this sheet are as listed below.
1) ICSC: International Chemical Safety Card
2) ACGIH: American Conference of Governmental Industrial
Hygienists
3) ATSDR: Agency for Toxic Substances and Disease Registry4) EHC77: WHO International Programme on Chemical Safety,
Environmental Health Criteria 775) IARC: International Agency for Research on Cancer6) JSOH: [Japan Society for Occupational Health7) HSDB: Hazardous Substances Data Bank of US National
Library of Medicine
8) JHSA: [Japan Hair Science Association ]This information will be revised based on new knowledge.
Out of the included content, the information relating to the included amounts and physical and chemical properties are notcertified values. The hazard and toxicological evaluations were produced based on the documentation and data available at thecurrent point of time, and do not cover all materials. Description in the sections to which sufficient knowledge and findings havenot been obtained in Japan is made to be consistent to the evaluations by US & European industries.

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