Sodium Phosphate Dibasic
- CAS Number
- 7558-79-4
- HSN Code
- 28352990
- Molecular Formula
- Na2HPO4
- Catalogue Number
- AL4236
- Purity
- 99%
- Molecular Weight
- 141.96 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Disodium hydrogenphosphate is a sodium phosphate.
Also known as Disodium hydrogen phosphate.
- Catalogue No.
- AL4236
- CAS Number
- 7558-79-4
- Molecular Formula
- Na2HPO4
- Molecular Weight
- 141.96 g/mol
- HSN Code
- 28352990
- Grade
- AR grade
- Product Form
- Substance
Melting point: MP: loses H2O at 92.5 °C; Specific gravity: 2.066 at 15 °C; Density: approx 1.7 g/cu cm; Solubility: Colorless crystals; 11.8 G sol in 100 cc water at 25 °C.
- Appearance
- Colorless, translucent crystals or white powder
- Shelf Life
- -
- Packaging
- Available in: 500 gm plastic bottle, 5 Kg plastic container
- Storage
- Separated from strong acids.
1.1 — Product identifier
- Chemical Name
- Sodium Phosphate Dibasic
- Catalogue No.
- AL4236
- Product form
- Substance
- CAS Number
- 7558-79-4
- EC Number
- 231-448-7
- Grade
- AR grade
- EC Index Number
- Not specified
- Chemical Formula
- Na2HPO4
- HSN Code
- 28352990
- Synonyms
- Disodium hydrogen phosphate
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Buffer component in analytical chemistry and biochemistry
- 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
- Not classified as hazardous (majority of notifications to the ECHA C&L Inventory)
- Classification source
- ECHA C&L Inventory via PubChem CID 24203 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- None required
- Signal word
- None
- Hazard statements
- None
2.3 — Other hazards
- Other hazards
- None known
3.1 — Substance
- Name
- Sodium Phosphate Dibasic
- CAS No.
- 7558-79-4
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water.
- First-aid measures after eye contact
- First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center.
- First-aid measures after ingestion
- Rinse mouth. Do not induce vomiting. Seek medical attention if symptoms occur.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- May cause mild irritation to skin, eyes, 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
- Behavior in fire: May melt with loss of steam.
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
- Contain spill and collect using appropriate protective equipment. Dispose of in accordance with local regulations.
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. If appropriate, moisten first to prevent dusting.
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 in a well-ventilated area.
- 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
- Not required under normal conditions of use.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White
- Odour
- NONE
- Odour threshold
- Not applicable
- pH value
- 7.5 - 9.0 (1% solution)
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- MP: loses H2O at 92.5 °C; Specific gravity: 2.066 at 15 °C
- Freezing point
- Not applicable
- Boiling point
- Not applicable
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not applicable
- Flammability (solid, gas)
- Non-flammable
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- approx 1.7 g/cu cm
- Solubility
- Colorless crystals; 11.8 G sol in 100 cc water at 25 °C
- Log Pow
- -5.8 (calculated)
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions of use and storage.
10.2 — Chemical stability
- Chemical stability
- On exposure to air, it absorbs 2-7 moles water depending on humidity and temperature.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Decomposes on heating. This produces toxic fumes. Reacts violently with strong acids.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong acids and strong bases.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- When heated to decomposition it emits toxic fumes of phosphorous and sodium oxides.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rat oral 17 g/kg
- Skin corrosion/irritation
- Not classified (based on available data)
- Serious eye damage/irritation
- Not classified (based on available data)
- 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)
- Not classified as dangerous goods
- Proper Shipping Name (IMDG)
- Not classified as dangerous goods
- Proper Shipping Name (IATA)
- Not classified as dangerous goods
- Proper Shipping Name (ADN)
- Not classified as dangerous goods
- Proper Shipping Name (RID)
- Not classified as dangerous goods
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not applicable
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
Sodium phosphate dibasic is widely used in the preparation of phosphate buffers, which are essential in biological and chemical research for maintaining stable pH levels. It is utilized in various applications including protein purification, enzyme assays, and as a component in culture media for microbiological studies. Additionally, it serves as a buffering agent in pharmaceuticals and is used in food processing as an emulsifier and stabilizer. Its role in analytical chemistry is significant, particularly in titrations and as a reagent in various chemical syntheses.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1408B
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 141.96 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | 99% min | 99.5% |
| Moisture Content | <1% | 0.5% |
| Residue on Ignition | <0.1% | 0.05% |
| pH (1% solution) | 7.5 - 9.0 | 8.0 |
The above product is expected to comply with AR grade grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| AR | 99% | m.p. MP: loses H2O at 92.5 °C; Specific gravity: 2.066 at 15 °C | <1% | <0.1% | None detected | Colorless crystals; 11.8 G sol in 100 cc water at 25 °C |
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“From ordering to shipping, every course of action was smooth. Timely delivery.”
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