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Caustic Soda CAS 1310-73-2
Overview
Caustic Soda Flakes appear as white, translucent, laminar scales. As the most commercially available form of Sodium Hydroxide, flake caustic offers an excellent balance of high alkalinity and cost-effectiveness. It is highly hygroscopic and widely used as a strong chemical base in heavy industries. Our flakes are produced using the Ion-Exchange Membrane process, ensuring low iron content and high purity (≥99%).
Product Description
Caustic Soda (Sodium Hydroxide) 99% | Flakes & Pearls
Caustic Soda, chemically known as Sodium Hydroxide (NaOH), is a strong chemical base and alkali. It is a white solid that is highly hygroscopic (absorbs moisture from the air). At [Your Company Name], we supply the two most popular solid forms for export:
- Caustic Soda Flakes: White, laminar scales. Cost-effective and widely used in general industry.
- Caustic Soda Pearls: White, spherical granules. They generate less dust and dissolve faster than flakes, often preferred for high-end manufacturing.
| Category | Test Item / Parameter | Unit | Standard Specification | Typical Result | Test Method |
| General Info | Product Name | – | Sodium Hydroxide | – | – |
| CAS Number | – | 1310-73-2 | – | – | |
| Standard | – | GB/T 209-2018 | – | – | |
| Chemical Analysis | Sodium Hydroxide (NaOH) | % | ≥ 99.0 | 99.35 | GB/T 4348.1 |
| (Purity) | Sodium Carbonate (Na₂CO₃) | % | ≤ 0.8 | 0.45 | GB/T 4348.1 |
| Sodium Chloride (NaCl) | % | ≤ 0.05 | 0.03 | GB/T 4348.1 | |
| Iron Oxide (Fe₂O₃) | % | ≤ 0.005 | 0.003 | GB/T 4348.1 | |
| Sodium Sulfate (Na₂SO₄) | % | ≤ 0.05 | 0.02 | Gravimetric | |
| Trace Impurities | Heavy Metals (as Pb) | ppm | ≤ 20 | < 10 | ICP-OES |
| (Safety Specs) | Mercury (Hg) | ppm | ≤ 0.1 | Not Detected | Atomic Absorption |
| Arsenic (As) | ppm | ≤ 3.0 | < 1.0 | Atomic Fluorescence | |
| Lead (Pb) | ppm | ≤ 5.0 | < 2.0 | ICP-MS | |
| Calcium (Ca) | ppm | ≤ 100 | 60 | EDTA Titration | |
| Water Insoluble Matter | % | ≤ 0.03 | 0.01 | Gravimetric | |
| Physical Properties | Appearance | – | White Pearls or Flakes | Conforms | Visual |
| Molecular Weight | g/mol | 40.00 | – | – | |
| Density (at 20°C) | g/cm³ | 2.13 | – | – | |
| Melting Point | °C | 318.4 | – | – | |
| Boiling Point | °C | 1390 | – | – | |
| Solubility (Water) | – | 111g / 100ml (20°C) | – | – | |
| pH Value | – | 13 – 14 | – | Strong Base |
PACKING AND DELIVERY
Packing and delivery
We offer secure and compliant packaging for a wide range of chemical products, from laboratory bottles (100 mL, 250 mL, 500 mL) to customized bulk containers. All shipments follow international hazardous goods standards and include complete documentation such as COA and SDS. With reliable global logistics partners, we ensure safe, fast, and efficient delivery by air, sea, or land according to customer needs.
FAQ
Q1: What documents and certifications do you provide?
A Standard shipment includes COA (Certificate of Analysis) and MSDS (SDS). We also provide ISO 9001 certification and support third-party inspections like SGS or BV upon request.
Q2: Do you provide custom synthesis or formulation services?
A Yes. If you have specific purity requirements or a unique formulation, our R&D team can provide custom synthesis and adjust the stabilizers/inhibitors to meet your technical specifications.
Q3: What are your terms of payment?
A
For Orders ≤ $1,000: 100% in advance.
For Orders > $1,000: 30% T/T in advance, and the balance before shipment or against the copy of B/L. Irrevocable L/C at sight is also acceptable for bulk orders.
Q4: How long is your price valid?
A Chemical prices fluctuate due to the changes in raw material costs and exchange rates. Please contact our sales team for the latest real-time quotation.
Q5: What packaging and shipping ports are available?
A
We normally ship from Qingdao, Shanghai, or Ningbo.
Standard packaging includes 200kg Drums or 1000kg IBC Totes. We ensure strict safety compliance for both general and hazardous chemical cargoes.
Q6: It's my first time importing chemicals — can you help?
A Absolutely. Importing chemicals requires specific documentation. Our experienced logistics team will assist you with the entire process, including handling customs clearance documents and arranging the most suitable shipping method.