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# Safety Data Sheet

Revised Date: 20 February 2015

1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND COMPANY
/UNDERTAKING
Product Name : DENKA CSA #20 General Use : Special expansive hydraulic binder for cement base materials

Manufacturer:

DENKI KAGAKU KOGYO KABUSHIKI KAISHA SPECIAL CEMENT INTERNATIONAL DEPT. Nihonbashi Mitsui Tower, 1-1, Nihonbashi-Muromachi 2-Chome, Chuo-Ku Tokyo 103-8338, JAPAN Tel : + 81-3-5290-5365 Fax : + 81-3-5290-5085

OMI PLANT, Niigata Pref. JAPAN Tel : + 81-255-62-6302 Fax : + 81-255-62-6327

Emergency telephone number : see : Manufacturer / Supplier E-mail contact: dk010313@denka.co.jp

2. HAZARDS IDENTIFICATION
Classification : Skin Corrosion/Irritation Category 1C H314 Serious Eye Damage Category 1 H318 Specific target organ toxicity-single exposure Category 3(Respiratory irritation) H335

Signal word : Danger
Health Effects : The product is a severe eye irritant, and may cause loss of sight, because of strong alkalinity. It is irritating to skin, especially if the skin is moist. Exposure to dust may cause respiratory irritation. Ingestion may cause gastrointestinal irritation.
Environmental Effects : Not classified as harmful, but may cause environmental effects to alkalinity.

### Page 2 of 5 Physico-chemical effects: Reacts with water producing heat. Solution produced is highly alkaline.

3. COMPOSITION/INFORMATION ON INGREDIENTS Single product / Compound : Compound
Chemical Name CAS No. % EINECS No. Classification
Calcium Sulfoaluminate 12005-25-3 25

- 35 Calcium Sulfate,Gypsum 7778-18-9 45

- 55 231-900-3

- Calcium Oxide 1305-78-8 15

- 25 215-138-9 H314,H318

4. FIRST-AID MEASURES Eye Contact : Speed is essential. Do not rub eyes. Immediately rinse eyes with plenty of fresh
water for at least 15 minutes and consult a doctor.
Inhalation : Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen
and consult a doctor.
Skin Contact : Immediately wash contaminated area with fresh water. Consult medical treatment if irritation or inflammation develops or persists. Launder contaminated clothing
before re-use. Ingestion : Rinse mouth thoroughly with fresh water. Immediately consult a doctor.

5. FIRE-FIGHTING MEASURES Fire and explosive properties The product is not flammable, and will not form explosive dust
clouds. Extinguishing media Not applicable Specific hazards The dust may form irritating atmosphere. The product will react exothermically with water. Contaminated water will be strongly
alkaline. Protective equipment for fire fighters Fire fighters should wear an approved self-contained breathing apparatus and full protective clothing.

6. ACCIDENTAL RELEASE MEASURES Personal precautions : Use proper personal protective equipment as indicated in section 8. Cleaning methods : Collect the product into suitable containers avoiding dust formation. Environmental precautions : Do not let this product enter the environment.

7. HANDLING AND STORAGE Handling : Use with adequate ventilation and local exhaust. Minimize dust generation and accumulation. Use proper personal protective equipment as indicated in section 8. Storage : Keep in a cool, dry place.

### Page 3 of 5 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Occupational Exposure Limits EU Occupational exposure limits (IOELVs): None UK Occupational exposure limits (WELs): Calcium oxide (8 h TWA): 2 mg/m 3

. Gypsum (8 h TWA): inhalable dust, 10 mg/m 3 ; respirable dust 4 mg/m 3

.

Engineering Controls : Use adequate ventilation and local exhaust to keep airborne concentration low. Maintain eye-rinse fountains and quick-drench shower facilities in
work area.
Personal Protection: The need for personal protective equipment should be based on a workplace risk assessment for the particular use. PPE should be to European (EN)
standards. Respiratory protection : In case of brief exposure or low pollution use filter respirator. In case of intensive or longer exposure, use self-contained breathing protection. Hand protection : Protective gloves – e.g. nitrile rubber, NBR gloves. Consult manufacturer concerning breakthrough times. Eye protection : Safety spectacles with side shields or goggles with full face shield. Skin and body protection : Where more extensive contact may occur, wear suitable protective clothing (eg apron, sleeves, boots).

9. PHYSICAL AND CHEMICAL PROPERTIES Physical State : Solid Appearance : White powder
Odour : Odourless pH : Dissolved product is alkaline. The pH value becomes 11-13. Melting Point : Not applicable Boiling Point : Not available Flammability: Non-flammable Vapour Pressure : Not applicable Relative Gravity : 2.90 – 2.96 g/cm 3 at 20 degree Celsius Water solubility : Partially soluble in water. Will solidify over a period of hours if moistened or

wet.

10. STABILITY AND REACTIVITY
General : Product is stable. Keep dry until use. Incompatible material and Conditions to Avoid : Strong acids. Hazardous decomposition : Reaction with strong acids generates toxic gases (e.g. sulfur oxide(s)).

11. TOXICOLOGICAL INFORMATION

### Page 4 of 5 The preparation has not been tested for toxicological effects, but it is classified as a skin and eye irritant on the basis of the known hazards of the components. Acute toxicity No components are classified as harmful. Not expected to cause systemic effects through skin contact. Corrosivity / irritation Expected to be a severe eye irritant, and irritating to skin. Dusts may irritate respiratory system. One component is expected to product highly alkaline solutions in water. Repeated or prolonged skin contact may cause irritation progressing to a burn.
Sensitisation No ingredient has been identified as having sensitising properties. Repeated-dose toxicity/mutagenicity/carcinogenicity/reproductive and developmental toxicity
No information available.

12. ECOLOGICAL INFORMATION Ecotoxicological data have not been determined specifically for this product, but it is not expected to be classified as toxic to aquatic organisms on the basis of the known hazards of the components. Mobility The product is partially soluble in water and expected to have a low vapour pressure. Persistence/degradability Not applicable to inorganic product.
Bioaccumulation Not applicable to inorganic product. Toxicity Not expected to be toxic to aquatic organisms, but may cause harmful changes in pH (high alkalinity) in water.

13. DISPOSAL CONSIDERATIONS This product may be suitable for disposal by landfill. Some reduction of hazard can be effected by careful neutralisation with dilute acid. Disposal must be in accordance with current national and local regulations. Chemical residues generally count as special waste, and their disposal may be regulated in the EC member countries through corresponding laws and regulations. We recommend that you contact either the authorities or approved waste disposal companies who will advise you on how to dispose of special waste. General EU requirements are given in the Waste Framework Directive (75/442/EEC) and the Hazardous Waste Directive (91/689/EEC). Packaging may contain residues of the product and should be treated accordingly. European Waste Catalogue (EWC) : 17 08 02 gypsum-based construction materials other than
mentioned in 17 08 01

14. TRANSPORT INFORMATION Transport by road/rail (ADR/RID) : Not regulated Maritime transport (IMDG code) : Not regulated Inland navigation (ADNR) : Not regulated Air transport (ICAO/IATA) : Not regurated This product is not classed as a dangerous good in any transport regulation.

### Page 5 of 5 15. REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard symbol : Xi. Risk phrases : R36/38, irritating to eyes and skin

R41, risk of serious damage to eyes Safety phrases :

S25 Avoid contact with eyes S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical
advice S37/39 Wear suitable gloves and eye/face protection 

### EU legislation: Dangerous Substances Directive (67/548/EEC) Dangerous Preparations Directive (99/45/EC) REACH Regulation (1907/2006) Chemical Agents Directive (98/24/EC) Personal Protective Equipment (EC Di rective) Regulations SI 1992/3139.

Guidance: Approved Classification and Labelling Guide (Fifth Edition). Approved Supply List. Information approved for the classification and labelling of substances and preparations dangerous for supply. COSHH Essentials: Easy steps to chemical control (http://www.coshh-essentials.org.uk/). Occupational Exposure Limits EH40.

16. OTHER INFORMATION The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no way shall the company be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if the company has been advised of the possibility of such damages.



### SDS Revised Date: 20 February 2015