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Customs Clearance of Nitroure, Silicure, and Distilled Water

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Clearance of Potassium Nitrate, Silicon Dioxide, and Distilled Water from Customs | HS Code, Documents, Permits & Steps

Clearance of Potassium Nitrate, Silicon Dioxide, and Distilled Water from Iranian Customs (HS Codes + Documents & Permits)

Clearing industrial and sensitive chemicals such as potassium nitrate, silicon dioxide, and distilled water requires precise documentation planning and full compliance with quality, sanitary, and—in some cases—security requirements. On this page, while preserving your full information, we present an SEO-standard structure, tariff codes, documents, permits, and key clearance notes for each item.

For a time & cost estimate and a document checklist for each substance, contact the experts at Saba Tarkhis.

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1) Items and Applications

Clearance of Potassium Nitrate, Silicon Dioxide, and Distilled Water

Potassium Nitrate (KNO₃)

Potassium nitrate, chemical formula KNO₃, is an inorganic compound and one of the most important nitrate salts. Owing to its strong oxidizing properties, it has broad applications across industries. In agriculture, it is used as a fertilizer, promoting plant growth and crop yields. In chemical and military industries, it is a key component in the manufacture of explosives such as gunpowder. In addition, it is used in the food industry as a preservative and color stabilizer.

Customs Tariff (HS Code):

Imports of potassium nitrate into Iran fall under tariff code 2834.21.00. In the Harmonized System (HS), this code specifically classifies nitrate salts—especially alkali nitrates such as potassium nitrate. The 2834.21.00 code, defined under mineral chemical compounds, covers all related import procedures and customs formalities for this substance.

Key Notes for Clearing Potassium Nitrate

Quality & Purity Control: Given its critical uses in defense, agriculture, and food, potassium nitrate requires stringent quality checks. Imports must be accompanied by advanced chemical analyses confirming high purity and absence of contaminants. Compliance with standards such as ISO and Iranian national standards (INSO) is mandatory.

Special & Security Permits: Because potassium nitrate can be used in explosive formulations and other sensitive defense products, its import is subject to close oversight by security/defense authorities. Obtaining specific permits from competent bodies—including the Ministry of Defense and Armed Forces Logistics—prior to import is required.

Safety Measures & Transport Standards: Due to its strong oxidizing nature, potassium nitrate is classified as a hazardous material and must be transported in line with the UN Recommendations on the Transport of Dangerous Goods. Packaging should minimize the risk of unwanted reactions during transit, using fire-resistant containers and moisture-tight packaging. Comprehensive safety and preventive measures must be implemented throughout transport.
This end-to-end approach to quality control, permitting, and safe logistics ensures that potassium nitrate is imported and used safely within authorized sectors.

Potassium Nitrate Imports & Exports
Exporting countries to Iran: mainly China, India, Chile, and Spain.
Export status: due to high domestic demand, Iran exports very little potassium nitrate and is largely an importer.

Silicon Dioxide (SiO₂)

Silicon dioxide (SiO₂), or silica, is a naturally occurring chemical compound widely found in nature. It is used in glassmaking, ceramics, electronics, and in the food and pharmaceutical industries. As a raw material for glass and ceramic production, silica plays a vital role. Owing to its moisture-absorbing properties, silicon dioxide is also used as a desiccant in industrial and pharmaceutical packaging.

Customs Tariff (HS Code):

Imports of silicon dioxide into Iran are classified under tariff code 2811.22.00. This code covers specified metal and non-metal oxides used in diverse industrial processes. As a critical mineral input for glass, ceramics, electronics, and as a food/pharma additive, silica is treated as an essential chemical, and this code covers all related customs formalities.

Key Notes for Clearing Silicon Dioxide

Quality & Purity Control: Imported SiO₂ must be precisely specified for purity, particle size, and crystal structure per industrial standards. In sensitive sectors—electronics and pharmaceuticals—purity is critical, as minor impurities can impair performance. Testing should be carried out by internationally accredited labs using spectroscopy, XRD, and nano-scale particle sizing. Compliance with global standards such as ISO 9001 and ISO 14001 is important for quality assurance.

Sanitary Permits & Regulatory Oversight: When used in food or pharmaceuticals, SiO₂ is subject to strict sanitary controls. The Iran Food & Drug Organization (Iran FDA) oversees safety in these applications. For importing silica as a food additive or pharmaceutical material, health permits from Iran FDA are mandatory, including certificates for absence of chemical/biological contaminants, safety attestations, and approval aligned with the intended end use.

Customs Formalities & Technical Evaluation: Clearance requires technical assessment of end use, specifications, and application. Iranian Customs, in coordination with regulatory bodies (e.g., Ministry of Industry, Mine & Trade), ensures conformity to industrial, pharmaceutical, and food standards. Inspections may include physical checks, random sampling, and confirmatory tests, with certificates of origin and compliance provided. This ensures safe, standards-compliant importation for industrial processes and human use.

Silicon Dioxide Imports & Exports
Exporting countries to Iran: mainly China, Germany, and the United States.
Export status: due to limited domestic production, Iran is primarily an importer of silicon dioxide.

Distilled Water

Distilled water is highly purified water from which all mineral salts and impurities have been removed. Owing to its high purity, it is used in sensitive industries such as pharmaceuticals, laboratories, and electronics. It is also used in car batteries and cooling systems.

Customs Tariff (HS Code):

Imports of distilled water into Iran fall under tariff code 2851.00.00. This code is designated for highly pure waters and similar chemical preparations used in precision industrial, scientific, and pharmaceutical processes. It includes deionized water, distilled water, and other types of pure water requiring special storage and transport conditions. Classification under 2851.00.00 covers all related customs requirements.

Key Notes for Clearing Distilled Water

Health & Regulatory Permits: When destined for pharmaceutical/medical use, distilled water is subject to strict sanitary oversight. Iran FDA must approve safety for such uses. Required documentation includes certificates of purity, absence of microbial/chemical contamination, and approvals for use in pharmaceutical and medical processes. Permits should be obtained prior to arrival to avoid delays.

Quality & Purity Control: Imported distilled water must pass rigorous quality tests to meet national and international standards. Tests—conducted by accredited laboratories—typically include very low conductivity, absence of particulates, and freedom from unwanted ions/chemicals, using methods such as UV-Vis spectroscopy, ion chromatography, and microbiological assays. Compliance with standards like ISO 3696 (Water for analytical laboratory use) and pharmaceutical water requirements is essential.

Specialized Packaging & Transport: Due to high sensitivity to external contamination, specialized packaging is required—manufactured from high-purity materials, gas/moisture-barrier, and sterilized. International transport must follow UN and pharma/chemical handling guidelines, with controlled temperature/humidity and multilayer protective packaging to prevent contamination and quality loss.

Distilled Water Imports & Exports
Exporting countries to Iran: mainly Turkey, Germany, and Italy.
Export status: with domestic production capacity, Iran can export to neighboring countries.

2) Common Key Requirements for Clearance

  • Document consistency with the HS Code, packing list, analysis, and labeling for each item to avoid tariff disputes.
  • Provide quality/purity certificates from accredited laboratories aligned with the cited national/international standards.
  • Obtain the necessary permits from competent authorities (health/safety/security depending on the item’s application) prior to declaration.
  • Adhere to dangerous goods transport standards and robust packaging for oxidizers/sensitive goods.
  • Place orders in the National Trade Window and complete system workflows to prevent delays.

3) Sample Tariff Lines & HS Codes

Item Short Description HS Code
Potassium Nitrate Alkali nitrate salt; oxidizer 2834.21.00
Silicon Dioxide (Silica) Non-metal oxide; industrial/food uses 2811.22.00
Distilled/Deionized Water High-purity water for sensitive uses 2851.00.00

Final classification depends on purity, grade, end use, supply form, and technical documentation.

4) Step-by-Step Clearance (How-to)

  1. Verify tariff line and regulatory requirements for each item (health/security/standards).
  2. Place order in the National Trade Window and upload proforma/analysis.
  3. Obtain necessary permits (Iran FDA/Standards/Security, as applicable).
  4. Arrange transport & packaging according to the material’s standards (especially for oxidizers).
  5. Declare to customs; sampling may occur and confirmatory tests performed.
  6. Pay duties/taxes, obtain the release permit, and remove goods.

Need precise HS Codes, customs-acceptable analyses, and a permit plan? Our team manages your case end-to-end.

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Frequently Asked Questions

What is the HS Code for each item?

Potassium nitrate: 2834.21.00 — Silicon dioxide: 2811.22.00 — Distilled/Deionized water: 2851.00.00. Final classification depends on technical docs and end use.

What permits are required for potassium nitrate?

Depending on end use, in addition to customs formalities, security/defense permits and dangerous goods transport documentation are required. For agricultural/food grades, quality and sanitary documents are also requested.

What documents are needed for food-grade silicon dioxide?

Iran FDA permit and purity certificates; proof of no chemical/microbial contamination; technical specs (Particle Size, XRD, SDS); and labeling aligned with the end use.

What standards should distilled water meet?

Very low electrical conductivity, absence of ions and particulates, and compliance with ISO 3696 and applicable pharmaceutical/lab water requirements.

Media Suggestions

  • Image file name: clearance-potassium-nitrate-silica-distilled-water-iran.jpg
  • Alt Text: Clearance of potassium nitrate 2834.21.00, silica 2811.22.00, and distilled water 2851.00.00 from Iranian customs
  • Caption: “Step-by-step clearance of sensitive chemicals—from order entry to health/security permits.”
  • Infographic: “Document checklist & quality tests for KNO₃, SiO₂, and distilled water.”

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Summary & Call to Action

Clearing sensitive materials such as KNO₃, SiO₂, and distilled water requires strict quality controls, relevant permits, and compliant packaging/transport standards. With hands-on experience, Saba Tarkhis executes your case quickly and in full compliance.

Request Expert Consultation Get a Clearance Proforma

Special Customs Clearance Services by Saba Brokerage

With years of experience in customs clearance and brokerage, Saba offers a wide range of end-to-end services for sensitive chemicals and industrial goods.
Specialized consulting: Professional advice for clearing sensitive chemicals (e.g., potassium nitrate, silicon dioxide) and industrial goods such as distilled water—including document review, logistics guidance, and acceleration strategies.
Permit acquisition: Obtaining all necessary sanitary, security, and chemical permits from the initial steps through final approval.
Customs procedures: Managing order placement, quality control, document submission, and end-to-end clearance follow-up.
Transport & logistics: Coordinating reliable domestic/international transport, specialized packaging for sensitive goods, and full supply-chain management.
Quality & safety assurance: Compliance with international standards to ensure product integrity and safety throughout transport and clearance.
Clearance tracking: Online, real-time tracking of your shipment’s clearance status with detailed, up-to-date reports.

Leveraging modern technology and a customer-centric approach, we ensure fast, hassle-free customs clearance. Our commitment to top-tier service quality helps clients achieve their commercial and industrial goals.

Contact our experts for more information.

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