Calcium Hydroxide
- CAS Number
- 1305-62-0
- HSN Code
- 28259040
- Molecular Formula
- Ca(OH)2
- Catalogue Number
- AL1082
- Purity
- ≥ 95%
- Molecular Weight
- 74.09 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Calcium dihydroxide is a calcium hydroxide. It has a role as an astringent.
Also known as Hydrated Lime, Calcium Dihydroxide.
- Catalogue No.
- AL1082
- CAS Number
- 1305-62-0
- Molecular Formula
- Ca(OH)2
- Molecular Weight
- 74.09 g/mol
- HSN Code
- 28259040
- Grade
- Extra Pure
- Product Form
- Substance
Melting point: 580 °C (Decomposes) (Loses H2O); Density: Approximately 2.2 g/cu cm; Solubility: Solubility in water is decreased by the presence of fixed alkali hydroxides.
- Appearance
- Crystals or soft granules or powder
- Shelf Life
- 2 years
- Packaging
- Available in: 500 gm plastic bottle, 5 Kg plastic bottle, 25 Kg fiber drum
- Storage
- Separated from strong acids.
1.1 — Product identifier
- Chemical Name
- Calcium Hydroxide
- Catalogue No.
- AL1082
- Product form
- Substance
- CAS Number
- 1305-62-0
- EC Number
- 215-137-3
- Grade
- Extra Pure
- EC Index Number
- Ca(OH)2
- Chemical Formula
- Ca(OH)2
- HSN Code
- 28259040
- Synonyms
- Hydrated Lime, Calcium Dihydroxide
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used in analytical chemistry and as a pH regulator.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Eye Dam. 1
- Classification source
- ECHA C&L Inventory via PubChem CID 6093208 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Corrosive
- Signal word
- Danger
- Hazard statements
- H318: Causes serious eye damage
2.3 — Other hazards
- Other hazards
- May cause respiratory irritation.
3.1 — Substance
- Name
- Calcium Hydroxide
- CAS No.
- 1305-62-0
4.1 — Description of first aid measures
- First-aid measures after inhalation
- If this chemical has been inhaled, remove the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the person warm and at rest.
- First-aid measures after skin contact
- If this chemical contacts the skin, immediately flush the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. If irritation persists after washing, get medical attention.
- First-aid measures after eye contact
- If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
- First-aid measures after ingestion
- If this chemical has been swallowed, get medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of eyes, skin, and respiratory tract.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Non-flammable; however, may react with acids to produce flammable hydrogen gas.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Avoid dust formation. Use appropriate personal protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Then store and dispose of according to local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid contact with skin and eyes. Use personal protective equipment as required.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Separated from strong acids.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if dust is generated.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White
- Odour
- Odorless
- Odour threshold
- Not applicable
- pH value
- 12.4 (1% solution)
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 580 °C (Decomposes) (Loses H2O)
- Freezing point
- Not applicable
- Boiling point
- Not applicable
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not applicable
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- 0 mmHg (approx)
- Relative vapour density at 20°C
- Not applicable
- Density
- Approximately 2.2 g/cu cm
- Solubility
- Solubility in water is decreased by the presence of fixed alkali hydroxides.
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidising
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Reacts with acids to form calcium salts and water, releasing heat.
10.2 — Chemical stability
- Chemical stability
- Readily absorbs carbon dioxide from air forming calcium carbonate.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Decomposes on heating. This produces calcium oxide. The solution in water is a medium strong base.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Acids, ammonium salts, and aluminum.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 rat oral 500 - 2000 mg/kg bw; LD50 rat oral 7,340 mg/kg; LD50 mouse oral 7300 mg/kg bw
- Skin corrosion/irritation
- Not classified (based on available data)
- Serious eye damage/irritation
- H318: Causes serious eye damage
- Respiratory or skin sensitisation
- Not classified (based on available data)
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- Not assigned
- UN-No. (IMDG)
- Not assigned
- UN-No. (IATA)
- Not assigned
- UN-No. (ADN)
- Not assigned
- UN-No. (RID)
- Not assigned
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Calcium Hydroxide
- Proper Shipping Name (IMDG)
- Calcium Hydroxide
- Proper Shipping Name (IATA)
- Calcium Hydroxide
- Proper Shipping Name (ADN)
- Calcium Hydroxide
- Proper Shipping Name (RID)
- Calcium Hydroxide
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not classified as hazardous for transport
14.4 — Packing group
- Packing group (ADR)
- Not applicable
- Packing group (IMDG)
- Not applicable
- Packing group (IATA)
- Not applicable
- Packing group (ADN)
- Not applicable
- Packing group (RID)
- Not applicable
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Used as a higher-purity alkaline reagent in analytical and preparative chemistry.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL0385A
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 74.09 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 95% | 96.5% |
| Moisture Content | ≤ 1% | 0.5% |
| Residue on Ignition | ≤ 1% | 0.3% |
| Related Substances | None detected | None detected |
| Solubility | Slightly soluble in water | 1.5 g/L at 20°C |
The above product is expected to comply with Extra Pure grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| Extra Pure | ≥ 95% | m.p. 580 °C (Decomposes) (Loses H2O) | ≤ 1% | ≤ 1% | None detected | Solubility in water is decreased by the presence of fixed alkali hydroxides. |
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