SAFETY DATA SHEET according to Regulation 1907/2006 amended by 2015/830/EU
Product name:


Creation date: 10.1.2008 · Revision: 16.11.2017 · Version: 2

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

1.1. Product identifier

Product name



Natrijevo vodno steklo; Natriumwasserglas; Sodium Waterglass


Silicic acid, sodium salt (1,6 < MR <= 2,6) (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
Phone: +386 2 7991 200
Fax: +386 2 7991 230

1.4. Emergency telephone number


+386 2 7991 208 (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.

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.
P262  Do not get in eyes, on skin, or on clothing.
P280  Wear protective gloves/protective clothing/eye protection/face protection.
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:


2.2.3. Special provisions

Irritates eyes and skin.
Danger of severe eye injuries.

2.3. Other hazards

The substances in the mixture are not classified as persistent, bioaccumulative and toxic (PBT) or very persistent and very bioaccumulative (vPvB).

3. Composition/information on ingredients

Product description

clear solution

3.1. Substances

Name CAS
% Classification according to Regulation (EC)
No 1272/2008 (CLP)
Specific Conc. Limits Classification according to directive 67/548/EEC or 99/45/EC REACH Registration No.
Silicic acid, sodium salt (1,6 < MR <= 2,6) 1344-09-8
30-37 % Skin Irrit. 2; H315
Eye Dam. 1; H318
Xi; R36/37/38 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

In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). Never give anything by mouth to an unconscious person. Place patient in recovery position and ensure airway patency.

Following inhalation

Remove patient to fresh air - move out of dangerous area. Ventilate the premises. Inhale fresh air. Seek medical help immediately.

Following skin contact

Areas of the body that have come into contact with the product must be rinsed immediately with plenty of running water. If irritation of skin persists seek medical attention.

Following eye contact

Immediately flush eyes with plenty of water while keeping eyelids apart (at least 15 minutes). Consult a physician immediately! Recommendation (based on practical experience): wash with plenty of water or with 3% boric acid solution.

Following ingestion

Rinse mouth thoroughly with water. Drink 2 glasses of water. Do not induce vomiting! In case of doubt or if feeling unwell seek medical help.

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


Coughing, sneezing, nasal discharge, labored breathing.

Skin contact

On contact with skin causes irritation and redness.

Eye contact

Strongly irritates eyes, causes lacrimation.


Irritates digestive organs - mouth, gullet, digestive tract.
Causes nausea/vomiting and diarrhoea.

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


5. Firefighting measures

5.1. Extinguishing media

Suitable extinguishing media

Use the usual extinguishing measures (carbon dioxide (CO2), dry chemical, foam; water spray)

Unsuitable extinguishing media

Not available.

5.2. Special hazards arising from the substance or mixture

Hazardous combustion products


5.3. Advice for firefighters

Protective actions

In case of fire or heating do not breathe fumes/vapours.

Special protective equipment for firefighters



6.1. Personal precautions, protective equipment and emergency procedures

6.1.1. For non-emergency personnel

Protective equipment

Use personal protective equipment (Section 8). Wear safety gloves and glasses. Thoroughly clean hands after use or contact.

Emergency procedures


6.1.2. For emergency responders

High risk of slipping due to leakage/spillage of product. Contaminated area may be slippery.

6.2. Environmental precautions

Do not allow product to reach water/drains/sewage systems and ground water. In case product reaches water bodies or sewage system or contaminatesground inform appropriate authorities in accordance with local regulation. Use appropriate containment to dispose waste (according to current regulation-section 13.)

6.3. Methods and material for containment and cleaning up

6.3.1. For containment

Prevent spilling.

6.3.2. For cleaning up

Small amounts rinse with plenty of water. Rinse contaminated area with water! Prevent product to reach water bodies or sewage systems. Sweep or shovel-up spillage and remove to a safe place. Place in a suitable container. Reuse (if feasible) or dispose in accordance with local 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


Measures to prevent aerosol and dust generation


Measures to protect the environment


7.1.2. Advice on general occupational hygiene

Avoid contact with skin and eyes. Use personal protective equipment. Do not eat or drink while working.

7.2. Conditions for safe storage, including any incompatibilities

7.2.1. Technical measures and storage conditions

Keep in well closed containers.

7.2.2. Packaging materials

Do NOT keep in aluminium containers!

7.2.3. Requirements for storage rooms and vessels


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

No information.

8.1.2. Information on monitoring procedures

BS EN 14042:2003 Workplace atmospheres. Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents. BS EN 482:2012+A1:2015 Workplace exposure. General requirements for the performance of procedures for the measurement of chemical agents. BS EN 689:2018 Workplace exposure. Measurement of exposure by inhalation to chemical agents. Strategy for testing compliance with occupational exposure limit values.

8.1.3. DNEL/DMEL values

No information.

8.1.4. PNEC values

No information.

8.2. Exposure controls

8.2.1. Appropriate engineering control

Substance/mixture related measures to prevent exposure during identified uses

Avoid contact with eyes and skin.

Organisational measures to prevent exposure

Remove all contaminated clothes immediately and wash them before reuse. Keep eyewash bottles or personal eyewash units available.

8.2.2. Personal protective equipment

Eye and face protection

Safety glasses with side protection (EN 166). Eye wash bottle with clean water.

Hand protection

Protective gloves (EN 374).

Skin protection

Cotton protective clothing and shoes that cover the entire foot (EN ISO 20345). Avoid contact with skin. Shower.

Respiratory protection

No requirements under normal use conditions.

Thermal hazards


8.2.3. Environmental exposure controls



9.1. Information on basic physical and chemical properties

- Physical state: liquid
- Colour: colorless
- Odour: no odour

Important health, safety and environmental information

- pH 11,5 – 12,5
- Melting point/freezing point No information.
- Initial boiling point/boiling range > 100 °C
- 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 Density:
1,34 – 1,38 g/cm3
- Solubility Water:
Completely soluble
- Partition coefficient No information.
- Auto-ignition temperature No information.
- Decomposition temperature No information.
- Viscosity No information.
- Explosive properties No information.
- Oxidising properties na

9.2. Other information

- Solid contents 35 – 38 g/l
- Remarks:


10.1. Reactivity


10.2. Chemical stability

Product is stable under normal conditions.

10.3. Possibility of hazardous reactions

Aqueous mixtures may react with aluminium, zinc, tin, copper and their alloys evolving hydrogen gas which can form an explosive mixture with air. Exothermic reaction with acids.

10.4. Conditions to avoid

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

10.5. Incompatible materials

Strong acids.
Aluminium. Magnesium, zinc.

10.6. Hazardous decomposition products

Under normal use conditions no hazardous decomposition products are expected.

11. Toxicological information

11.1. Information on toxicological effects

(a) Acute toxicity

NameExposure routeTypeSpeciesTimeValueMethodRemark
For productoralLD50rat 3500 mg/kg
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)oralLD50rat 2800 mg/kgOECD 401
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)dermalLD50rat> 5000 mg/kgEPA OPPTS 870.1200

(b) Skin corrosion/irritation

Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)rabbit24 hSevere irritation.

(c) Serious eye damage/irritation

Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)rabbit24 hSevere irritation.

(d) Respiratory or skin sensitisation

NameExposure routeSpeciesTimeResultMethodRemark
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)dermalmouseNon sensitising.OECD 429Local lymph node assay

(e) (Germ cell) mutagenicity

Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)in-vitro mutagenicityCell: Mammalian-AnimalNegative with metabolic activation, negative without metabolic activation.OECD 473
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)Cell: Mammalian-AnimalNegative with metabolic activation, negative without metabolic activation.OECD 476Gene Mutation
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)BacteriaNegative with metabolic activation, negative without metabolic activation.OECD 471Bacterial Reverse Mutation Test
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)mouseNegative.OECD 475oral

(f) Carcinogenicity

NameExposure routeTypeSpeciesTimeValueResultMethodRemark
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)Not carcinogenic.

(g) Reproductive toxicity

NameReproductive toxicity typeTypeSpeciesTimeValueResultMethodRemark
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)NOAEL (P)rat12 weeks 159 mg/kg3 generation studyoral: drinking water

Summary of evaluation of the CMR properties

No information.

(h) STOT-single exposure

No information.

(i) STOT-repeated exposure

NameExposure routeTypeSpeciesTimeOrganValueResultMethodRemark
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8)oralNOAELrat4 weeks 2400 mg/kgOECD 407daily

(j) 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 (1,6 < MR <= 2,6) (1344-09-8) LC50 > 100 mg/L 96 h fish Danio rerio

12.1.2. Chronic (long-term) toxicity

For components
Substance (CAS Nr.) Type Value Exposure time Species Organism Method Remark
Silicic acid, sodium salt (1,6 < MR <= 2,6) (1344-09-8) NOEC 35 mg/l fish

12.2. Persistence and degradability

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

No information.

12.2.2. Biodegradation

No information.

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

The components in this formulation do not meet the criteria for classification as PBT or vPvB.

12.6. Other adverse effects

No information.

12.7. Additional information

For product

Do not allow to reach ground water, water courses or sewage system.

For components

Substance: Silicic acid, sodium salt (1,6 < MR <= 2,6)

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 authorised 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


Abbreviations and acronyms

ATE - Acute Toxicity Estimate
ADR - Agreement concerning the International Carriage of Dangerous Goods by Road
ADN - European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways
CEN - European Committee for Standardisation
C&L - Classification and Labelling
CLP - Classification Labelling Packaging Regulation; Regulation (EC) No 1272/2008
CAS# - Chemical Abstracts Service number
CMR - Carcinogen, Mutagen, or Reproductive Toxicant
CSA - Chemical Safety Assessment
CSR - Chemical Safety Report
DMEL - Derived Minimal Effect Level
DNEL - Derived No Effect Level
DPD - Dangerous Preparations Directive 1999/45/EC
DSD - Dangerous Substances Directive 67/548/EEC
DU - Downstream User
EC - European Community
ECHA - European Chemicals Agency
EC-Number - EINECS and ELINCS Number (see also EINECS and ELINCS)
EEA - European Economic Area (EU + Iceland, Liechtenstein and Norway)
EEC - European Economic Community
EINECS - European Inventory of Existing Commercial Substances
ELINCS - European List of notified Chemical Substances
EN - European Standard
EQS - Environmental Quality Standard
EU - European Union
Euphrac - European Phrase Catalogue
EWC - European Waste Catalogue (replaced by LoW – see below)
GES - Generic Exposure Scenario
GHS - Globally Harmonized System
IATA - International Air Transport Association
ICAO-TI - Technical Instructions for the Safe Transport of Dangerous Goods by Air
IMDG - International Maritime Dangerous Goods
IMSBC - International Maritime Solid Bulk Cargoes
IT - Information Technology
IUCLID - International Uniform Chemical Information Database
IUPAC - International Union for Pure Applied Chemistry
JRC - Joint Research Centre
Kow - octanol-water partition coefficient
LC50 - Lethal Concentration to 50 % of a test population
LD50 - Lethal Dose to 50% of a test population (Median Lethal Dose)
LE - Legal Entity
LoW - List of Wastes (see
LR - Lead Registrant
M/I - Manufacturer / Importer
MS - Member States
MSDS - Material Safety Data Sheet
OC - Operational Conditions
OECD - Organization for Economic Co-operation and Development
OEL - Occupational Exposure Limit
OJ - Official Journal
OR - Only Representative
OSHA - European Agency for Safety and Health at work
PBT - Persistent, Bioaccumulative and Toxic substance
PEC - Predicted Effect Concentration
PNEC(s) - Predicted No Effect Concentration(s)
PPE - Personal Protection Equipment
(Q)SAR - Qualitative Structure Activity Relationship
REACH - Registration, Evaluation, Authorisation and Restriction of Chemicals Regulation (EC) No 1907/2006
RID - Regulations concerning the International Carriage of Dangerous Goods by Rail
RIP - REACH Implementation Project
RMM - Risk Management Measure
SCBA - Self-Contained Breathing Apparatus
SDS - Safety data sheet
SIEF - Substance Information Exchange Forum
SME - Small and Medium sized Enterprises
STOT - Specific Target Organ Toxicity
(STOT) RE - Repeated Exposure
(STOT) SE - Single Exposure
SVHC - Substances of Very High Concern
UN - United Nations
vPvB - Very Persistent and Very Bioaccumulative

Key literature references and sources for data

NaVSP, v.1

List of relevant H phrases

H315  Causes skin irritation.
H318  Causes serious eye damage.

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.