SAFETY DATA SHEET according to Regulation 1907/2006
Product name:


Creation date: 17.7.2013 · Revision: 26.4.2016 · Version: 2.0

1. Identification of the substance/mixture and of the company/undertaking

1.1. Product identifier

Product name



Natrijev disilikat; Sodium Disilicate; Natriumdisilikat; Acido silicico


Silicic acid, sodium salt (CAS: 1344-09-8, EC: 215-687-4)

REACH Registration number


1.2. Relevant identified uses of the substance or mixture and uses advised against

Relevant identified uses

Industrial use

Uses advised against

No information.

1.3. Details of the supplier of the safety data sheet


SILKEM, d. o. o.
Address: Tovarniška cesta 10, 2325 Kidričevo, Slovenia
Tel.: +386 2 7991 200
Fax: +386 2 7991 230

1.4. Emergency telephone number




+386 2 7991 214 (7h - 15h)

2. Hazards identification

2.1 Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008 (CLP)

Skin Irrit. 2; H315  Causes skin irritation.
Eye Dam. 1; H318  Causes serious eye damage.
STOT SE 3; H335  May cause respiratory irritation.

2.2 Label elements

2.2.1. Labelling according to Regulation (EC) No 1272/2008 [CLP]

Signal word: Danger

H315  Causes skin irritation.
H318  Causes serious eye damage.
H335  May cause respiratory irritation.
P261  Avoid breathing dust/fume/gas/mist/vapours/spray.
P262  Do not get in eyes, on skin, or on clothing.
P280  Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331  IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P303 + P361 + P353  IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
P305 + P351 + P338  IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

2.2.2. Contains:

Silicic acid, sodium salt (CAS: 1344-09-8, EC: 215-687-4)

2.2.3. Special provisions

Special hazards are not known or expected.

2.3. Other hazards

No information.

3. Composition/information on ingredients

3.1. Substances

Name CAS
% Classification according to Regulation (EC)
No 1272/2008 (CLP)
Classification according to directive 67/548/EEC or 99/45/EC REACH Registration No.
Silicic acid, sodium salt 1344-09-8
99 Skin Irrit. 2; H315
Eye Dam. 1; H318
STOT SE 3; H335
Xi; R37/38-41 01-2119448725-31-0029

3.2. Mixtures

For substances see 3.1.

4. First aid measures

4.1. Description of first aid measures

General notes

Never give anything by mouth to an unconscious person. Place patient stably in side position for transportation.

Following inhalation

Remove patient to fresh air-move out of dangerous area. If symptoms persist seek medical attention.

Following skin contact

Take off all contaminated clothing. If feeling unwell seek medical help. Wash affected skin areas thoroughly with plenty of water and soap!

Following eye contact

Immediately flush eyes with running water, keeping eyelids open. If irritation does not stop, seek professional medical treatment!

Following ingestion

Do not induce vomiting. Rinse mouth with water. Consult a physician. Show the physician the Safety Data Sheet or label.

4.2. Most important symptoms and effects, both acute and delayed


Coughing, sneezing, nasal discharge, labored breathing.

Skin contact

Itching, redness, pain.

Eye contact

Redness, tearing, pain.


Irritates mucous membranes in the mouth, throat, esophagus and in gastrointestinal area.

4.3. Indication of any immediate medical attention and special treatment needed


5. Firefighting measures

5.1. Extinguishing media

Suitable extinguishing media

Carbon dioxide. Dry chemical powder. Water spray. Alcohol resistant foam.

Unsuitable extinguishing media


5.2. Special hazards arising from the substance or mixture

Hazardous combustion products


5.3. Advice for firefighters

Protective actions

In case of fire do not breathe fumes/gases.

Special protective equipment for fire-fighters

Fire-fighters should wear appropriate protective clothing for fire-fighters (including helmets, protective boots and gloves) (EN 469) and self-contained breathing apparatus (SCBA) with a full face-piece (EN 137) .


6.1. Personal precautions, protective equipment and emergency procedures

6.1.1. For non-emergency personnel

Protective equipment

Use personal protective equipment (Section 8).

Emergency procedures

Ensure adequate ventilation.

6.1.2. For emergency responders


6.2. Environmental precautions

If accidental entry into water or ground occurs, inform responsible authorities.

6.3. Methods and material for containment and cleaning up

6.3.1. For containment


6.3.2. For cleaning up

Collect in a suitable container and dispose according to regulations.

6.3.3. Other information


6.4. Reference to other sections

See also sections 8 and 13.

7. Handling and storage

7.1. Precautions for safe handling

7.1.1. Protective measures

Measures to prevent fire

Ensure adequate ventilation.

Measures to prevent aerosol and dust generation

Prevent dusting.

Measures to protect the environment


7.1.2. Advice on general occupational hygiene

Use good personal hygiene practices-wash hands at breaks and when done working with material. Do not eat, drink or smoke while working. Avoid contact with skin and eyes. Do not breathe dust.

7.2. Conditions for safe storage, including any incompatibilities

7.2.1. Technical measures and storage conditions

Keep in cool and well ventilated area. Keep away from food, drink and animal feedingstuffs.

7.2.2. Packaging materials


7.2.3. Requirements for storage rooms and vessels

Keep in tightly closed containers.

7.2.4. Storage class


7.2.5. Further information on storage conditions


7.3. Specific end use(s)



Industrial sector specific solutions


8. Exposure controls/personal protection

8.1. Control parameters

8.1.1. Occupational Exposure limit values

Name (CAS) Limit values Short-term exposure limit Remarks Biological Tolerance Values
Silicic acid, sodium salt (1344-09-8) 10 UK, DE, IUCLID

8.1.2. Information on monitoring procedures

BS EN 14042:2003 Title Identifier: Workplace atmospheres. Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents.

8.1.3. DNEL values

For components

Name Type exp. route exp. frequency value Remark
Silicic acid, sodium salt (1344-09-8) Worker dermal long term (systemic effects) 1,59 mg/kg bw/day
Silicic acid, sodium salt (1344-09-8) Worker inhalation long term (systemic effects) 5,61 mg/m³
Silicic acid, sodium salt (1344-09-8) Consumer dermal long term (systemic effects) 0,8 mg/kg bw/day
Silicic acid, sodium salt (1344-09-8) Consumer inhalation long term (systemic effects) 1,38 mg/m³
Silicic acid, sodium salt (1344-09-8) Consumer oral long term (systemic effects) 0,8 mg/kg bw/day

8.1.4. PNEC values

For components

Name exp. route value Remark
Silicic acid, sodium salt (1344-09-8) fresh water 7,5 mg/L
Silicic acid, sodium salt (1344-09-8) marine water 1 mg/L
Silicic acid, sodium salt (1344-09-8) water, intermittent release 7,5 mg/L
Silicic acid, sodium salt (1344-09-8) water treatment plant 348 mg/L

8.2. Exposure controls

8.2.1. Appropriate engineering control

Substance/mixture related measures to prevent exposure during identified uses

Use good personal hygiene practices-wash hands at breaks and when done working with material.

Technical measures to prevent exposure

Provide good ventilation and local exhaust in the area with increased concentration.

8.2.2. Personal protective equipment

Eye and face protection

Safety glasses with side protection (EN 166).

Hand protection

Protective gloves (EN 374).

Skin protection

Cotton protective clothing (EN ISO 13688) and shoes that cover the entire foot (EN ISO 20345).

Respiratory protection

Wear suitable protective breathing mask (EN 136) with filter A2-P2 (EN 14387).

Thermal hazards


8.2.3. Environmental exposure controls

Technical measures to prevent exposure

Do not allow product to reach drains, sewage systems or ground water.


9.1. Information on basic physical and chemical properties

- Physical state: solid
- Colour: white
- Odour: None

Important health, safety and environmental information

- pH ≤ 11,5
- Melting point/Freezing point ≤ 800 °C
- Initial boiling point/boiling range No information.
- Flash point No information.
- Evaporation rate No information.
- Flammability (solid, gas) No information.
- Explosion limits (vol%) No information.
- Vapour pressure No information.
- Vapour density No information.
- Density Bulk density:
450 – 650 g/cm3
- Solubility Water:
- Partition coefficient No information.
- Auto-ignition temperature No information.
- Decomposition temperature No information.
- Viscosity No information.
- Explosive properties No information.
- Oxidising properties No information.

9.2. Other information

- Remarks:


10.1. Reactivity


10.2. Chemical stability

Product is stable under normal conditions according to handling and storage.

10.3. Possibility of hazardous reactions


10.4. Conditions to avoid

No special precautions required. Consider the directions for use and storage.

10.5. Incompatible materials

Do not mix with other chemicals (detergents, cleansing agent).

10.6. Hazardous decomposition products

Under normal use conditions no hazardous decomposition products are expected. In case of fire/explosion vapours dangerous for health are spread.

11. Toxicological information

11.1. Information on toxicological effects

11.1.1. Acute toxicity

For components
Name exp. route Type species Time value Method Remark
Silicic acid, sodium salt (1344-09-8) oral LD50 rat (male/female) = 3400 mg/kg bw OECD 401 experimental value
Silicic acid, sodium salt (1344-09-8) inhalation LC50 mouse (male/female) > 2,06 mg/m3 EPA OPPTS 870.1300
Silicic acid, sodium salt (1344-09-8) dermal LD50 rat > 5000 mg/kg bw EPA OPPTS 870.1200

11.1.2. Skin corrosion/irritation, serious eye damage/irritation

For components
Name exp. route species Time result Method Remark
Silicic acid, sodium salt (1344-09-8) dermal Contact with skin causes irritation.
Silicic acid, sodium salt (1344-09-8) eyes Severely irritating; causes tearing
Silicic acid, sodium salt (1344-09-8) inhalation Causes respiratory tract irritation.

11.1.3. Respiratory or skin sensitisation

For components
Name exp. route species Time result Method Remark
Silicic acid, sodium salt (1344-09-8) dermal mouse Non sensitizing. OECD 429

11.1.4. Carcinogenicity, Mutagenicity, Reproductive toxicity


- For components
Name exp. route Type species Time value result Method Remark
Silicic acid, sodium salt (1344-09-8) Not carcinogenic.
(Germ cell) mutagenicity

- For components
Name Type species Time result Method Remark
Silicic acid, sodium salt (1344-09-8) Not mutagenic.
Reproductive toxicity

- For components
Name Reproductive toxicity type Type species Time value result Method Remark
Silicic acid, sodium salt (1344-09-8) Not toxic for reproduction.
Summary of evaluation of the CMR properties

No information.

11.1.5. STOT - single and repeated exposure

For components
Name exp. route Type species Time organ value result Method Exposure Remark
Silicic acid, sodium salt (1344-09-8) oral - May cause nausea/vomiting and diarrhea Single exposure

11.1.6. Aspiration hazard

No information.

12. Ecological information

12.1. Toxicity

12.1.1. Acute (short-term) toxicity

For components
Substance (CAS Nr.) Type Value Exposure time Species Organism Method Remark
Silicic acid, sodium salt (1344-09-8) LC50 3158 – 478 mg/L 96 h fish
LC50 301 – 478 mg/L 96 h fish
EC50 216 – 18000 mg/L 96 h algae

12.1.2. Chronic (long-term) toxicity

No information.

12.2. Persistence and degradability

12.2.1. Abiotic degradation, physical- and photo-chemical elimination

No information.

12.2.2. Biodegradation

For components
Substance (CAS Nr.) Organism Rate Time Evaluation Method Remark
Silicic acid, sodium salt (1344-09-8) - not readily biodegradable

12.3. Bioaccumulative potential

12.3.1. Partition coefficient

No information.

12.3.2. Bioconcentration factor (BCF)

No information.

12.4. Mobility in soil

12.4.1. Known or predicted distribution to environmental compartments

No information.

12.4.2. Surface tension

No information.

12.4.3. Adsorption/Desorption

No information.

12.5. Results of PBT and vPvB assessment

No evaluation.

12.6. Other adverse effects

No information.

12.7. Additional information

For components

Substance: Silicic acid, sodium salt

Do not allow to reach ground water, water bodies or sewage systems.

13. Disposal considerations

13.1. Waste treatment methods

13.1.1. Product / Packaging disposal

Waste chemical

Disposal must be made according to official regulations: deliver it to authorized collector/remover/transformer of hazardous waste.


Deliver completely emptied containers to approved waste disposal authorities.

13.1.2. Waste treatment-relevant information


13.1.3. Sewage disposal-relevant information


13.1.4. Other disposal recommendations


14. Transport information

14.1. UN number

not applicable

14.2. UN proper shipping name

ADR, RID, IMDG, ADN, IATA: Not dangerous according to transport regulations.

14.3. Transport hazard class(es)

not applicable

14.4. Packing group

not applicable

14.5. Environmental hazards


14.6. Special precautions for user

not applicable

14.7. Transport in bulk according to Annex II of Marpol and the IBC Code

not applicable

15. Regulatory information

15.1. Safety, health and environmental regulations/legislation specific for the substance or mixture

- Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)(including last amendment Commission Regulation (EU) 2015/830)

- Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures

15.1.1. Information according 2004/42/EC about limitation of emissions of volatile organic compounds (VOC-guideline)

not applicable

15.2. Chemical Safety Assessment

No Chemical Safety Assessment has been carried out for this substance/mixture by the supplier.

16. Other information

Indication of changes


Key literature references and sources for data

NADIS 600, Silkem d.o.o., version 1.0

List of relevant H phrases

H315  Causes skin irritation.
H318  Causes serious eye damage.
H335  May cause respiratory irritation.

The information of this SDS is based on the present state of our knowledge and meets the requirements of EU and national laws. The user’s working conditions however, are beyond our knowledge and control. The product is not to be used for purposes other than those specified under section 1 without a written permission. It remains the responsibility of the user to ensure that the necessary steps are taken to meet the laws and regulations. Handling of the product may only be done by people above 18 years of age, who are satisfactorily informed of how to do the work, the hazardous properties and necessary safety precautions. The information given in this SDS is to describe the product only in terms of health and safety requirements and should not, therefore, be construed as guaranteeing specific properties.