Sulphuric Acid is a commonly used chemical compound in various industries like fertilizers,
chemicals, petroleum products, metals and water treatment. Due to its highly corrosive nature
and wide applicability, the chemical should always be of the same high quality and meet set
specifications to ensure that there are no adverse effects and risks involved. Consistency in the
chemical substance is mandatory so that it performs well and ensures safety measures.
For uniformity and conformity with set standards, the IS requirement for IS 266:2025 should be met by Sulphuric Acid. During the process of obtaining BIS certification, the product gets evaluated on the basis of various criteria like concentration of sulphuric acid, impurities, density, appearance, and other chemical aspects as provided under the standards. It is necessary that manufacturers of the product get BIS certification before manufacturing, importing or selling Sulphuric Acid in India.
What is IS 266:2025 for Sulphuric Acid?
This is the Indian Standard for Sulphuric Acid used in various industrial applications, including chemical manufacturing, fertilizers, pharmaceuticals, water treatment and metal processing. It specifies the quality requirements, sampling procedures, and testing methods to ensure product consistency, purity, and safe industrial use. As per the BIS (Bureau of Indian Standards), Sulphuric Acid is:
- Tested for purity and concentration
- Evaluated for chemical composition
- Assessed for impurity levels
- Verified for compliance with prescribed requirements
BIS Licensing Requirements for Sulphuric Acid Producers
BIS authorisation under IS 266:2025 is required for businesses involved in manufacturing, importing, or supplying Sulphuric Acid in India.
Applicable to:
- Manufacturers (India) - Must get BIS approval if the products are covered under QCO.
- Foreign Manufacturers - Need certification to export Sulphuric Acid to India.
- Importers/Brand Owners - Must ensure that the products are BIS-certified before sale.
- Sellers/Distributors - Should only sell certified chemical.
Product Inspection Requirements Under IS 266:2025
To maintain uniformity in the quality of chemicals as well as purity standards of Sulphuric Acid employed for fertilizers, chemical processing, pharmaceuticals, etc., the Bureau of Indian Standards sets out the minimum standards as per the guidelines mentioned in IS 266:2025.Below are the testing standards laid down by BIS for Sulphuric Acid:
Process to get ISI Mark Certification for Sulphuric Acid
The BIS Authorisation process ensures Sulphuric Acid meets IS 266:2025 for concentration, purity and industrial safety. The certification process includes the following steps:
- Online Registration: Manufacturers register on the BIS Manak portal by submitting company, factory, and product details. Foreign manufacturers must appoint an Authorized Indian Representative (AIR).
- Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories for concentration level, impurity limits, density, and chemical purity.
- Application Submission: The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection: BIS officials visit the manufacturing facility to evaluate production processes, safety measures, and the quality control system.
- Grant of BIS License: After all compliance requirements are satisfactorily met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: Following approval, the manufacturer is authorized to use the ISI Mark on the product along with a valid CM/L number, confirming that the product meets BIS standards.
Documents Needed for BIS Approval under IS 266:2025
| Document Category | Documents Required |
|---|
| Basic Details | GST Certificate, Email ID & Contact Number, Factory & Office Address, Rent Agreement / Lease Deed (if applicable), Partnership Deed (if applicable for partnership firms) |
| Manufacturing Details | List of Machinery, Process Flow Chart, Factory Layout Plan |
| Raw Material Details | List of Raw Materials, Supplier Details, Raw Material Invoices, Raw Material Test Certificates |
| Testing & Quality Control | List of Testing Equipment, Calibration Certificates, QC/Lab In-charge Appointment Letter & Qualification |
| Production Details | Annual Installed Capacity, Last Year Production Value |
| Product & Packaging Details | Quantity per Package, Nature of Packing, Product Printing / Marking Details |
| Management Details | Top Management Details, BIS Communication Contact Person |
| Brand & Certification Documents | Trademark / Brand Certificate, Consent Letter from BIS Recognized Laboratory |
| Additional Documents | Weekly Off Details, Hygiene Document (if applicable), Relaxation Letter (if applicable), Any Other Relevant Document |
| Foreign Manufacturer Requirements | Agreement with AIR (Authorized Indian Representative), Aadhaar Card of AIR, AIR Nomination Form, Required Undertakings, Scope of License |
The Foreign manufacturers must designate an Authorized Indian Representative (AIR) in India. The representative is the local point of contact for the Bureau of Indian Standards (BIS) and manages all compliance and regulatory requirements in India.
Product Marking Standards Under IS 266:2025
After the BIS certification is received, the ISI mark for Sulphuric Acid needs to be properly and permanently marked on the packaging or containers. Additional details are provided below:
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 266:2025 |
| CML Number | Certification Marks Licence (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Batch / Date | Batch number, heat number, or manufacturing date for traceability |
Note: Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
Duration and Validity of Sulphuric Acid BIS License
| Particulars | Details |
|---|
| Validity | Typically 1 to 2 years, depending on BIS approval conditions |
| Renewal | Must be renewed before expiry by submitting the application along with the prescribed fee and updated documents |
| Surveillance | Includes periodic factory inspections and market sample testing conducted by BIS |
| Compliance | Continuous following to standard and applicable Quality Control Orders (QCOs) is mandatory |
| Risk | Non-compliance or failed sample testing may lead to suspension or cancellation of the BIS license |
Certification Cost for Sulphuric Acid Under IS 266:2025
The fees required for getting BIS Certification for Sulphuric Acid include Application Fee, Testing Fee, Inspection Fee, Licensing Fee, and Marking Fee as per BIS Scheme-I.
| Charge Type | Indian Manufacturers | Foreign Manufacturers |
|---|
| Application Fee | INR 1,000 | USD 15 |
| Audit Charges | INR 7,000 | USD 3,200 – 5,900 |
| License Fee | INR 1,000 | USD 15 |
| Marking Fee | As applicable | As applicable |
| Testing Charges | As applicable | As applicable |
| EVTL India Consultancy Fee | As per actual | As per actual |
Note:
- Application fee for foreign manufacturers is payable via SWIFT (SAARC countries may pay in INR with applicable GST).
- Audit charges for foreign manufacturers vary based on country/location.
- The marking fee is determined based on the product category and production volume (MSME benefits may apply).
- Testing charges are to be paid directly to BIS-recognised laboratories.
- Consultancy fees can vary depending on product type and factory location.
Conclusion
The use of Sulphuric Acid according to the specifications of IS 266:2025 guarantees high quality, purity, and performance characteristics of the product. The standard provides specifications for the chemical composition, concentration, allowable content of impurities, and other important characteristics to provide reliable and efficient use of the product in accordance with safety standards.
The compliance with the specified requirements by the BIS shows that the respective manufacturing company is dedicated to high quality and compliance. As far as the assistance in obtaining the certificate from the BIS is concerned, EVTL India helps the manufacturing companies with the document preparation, laboratory testing, application processing, and other aspects of certification.
