How to Ship Dangerous Goods from Singapore: SME Guide
- Iman Yusoff
- Jun 1
- 11 min read
Shipping dangerous goods from Singapore looks simple until one wrong code stops your cargo. One misdeclared container can trigger a terminal fee of up to SGD 10,000. Most SME owners never trained for this — yet they ship hazardous items every week. Lithium batteries, lubricants, aerosols, and paints all count as dangerous goods. This guide explains the nine UN classes, the documents you need, and the misdeclaration penalties to avoid. Read it before your next hazardous shipment leaves the Port of Singapore.
Key Takeaway
Dangerous goods shipping follows the UN classification system across nine hazard classes. For sea freight, the IMDG Code applies; for air freight, the IATA DGR applies. Every shipment needs a correct UN Number, packing group, and Dangerous Goods Declaration. In Singapore, misdeclaration now triggers penalties at terminal, carrier, and national levels.
What Counts as Dangerous Goods?
Dangerous goods are items that pose a risk to health, safety, property, or the environment during transport. The United Nations groups them into nine hazard classes. Singapore follows this system through the IMDG Code for sea freight. Classification is therefore the first legal step, not an optional one.
The 9 UN Classes of Dangerous Goods
The UN system sorts every dangerous good into one of nine classes by primary hazard. Class 1 covers explosives; Class 2 covers gases; Class 3 covers flammable liquids. Classes 4 to 9 cover solids, oxidisers, toxics, radioactive material, corrosives, and miscellaneous hazards.
These nine classes come from the UN Model Regulations, the global baseline adopted by the IMO and IATA. Each class carries its own packaging, labelling, and documentation rules. Notably, one product can hold a primary class and a subsidiary hazard at the same time. You cannot guess the class — you must match the substance to its official entry.
For example, a single chemical can sit in Class 3 yet also carry a Class 8 corrosive risk. Getting the class wrong cascades directly into wrong packaging and wrong paperwork.
SME Products That Are Secretly Dangerous Goods
Many everyday SME products qualify as dangerous goods without the seller realising it. Lithium batteries, perfumes, nail polish, paints, lubricants, and aerosols all carry hidden hazards. E-commerce sellers therefore ship regulated cargo far more often than they expect.
Lithium-ion batteries fall under Class 9, commonly UN 3480 or UN 3481 (UN Model Regulations). This means a phone-accessory seller shipping power banks already handles dangerous goods. Perfume and alcohol-based cosmetics often fall under Class 3 flammable liquids — a small skincare exporter can breach IMDG rules with one unlabelled carton.
This gap is where most ASEAN SMEs get caught. They treat hazardous items as ordinary parcels — until a carrier rejects the booking. Need help auditing your catalogue? Review our freight forwarding services for SME exporters.
How to Classify Your Cargo (UN Number + Packing Group)
Classification assigns your cargo a four-digit UN Number, a proper shipping name, and a packing group. This identity drives every downstream rule: packaging, labels, and the declaration. Singapore Customs and carriers both rely on this exact data. Get it right once, and the rest of the process follows logically.
Finding Your UN Number and Proper Shipping Name
The UN Number is a four-digit code that identifies a specific dangerous substance or article. You find it in the Dangerous Goods List of the IMDG Code or IATA DGR. The proper shipping name is the official description that pairs with that number.
Every UN Number maps to one proper shipping name in the UN Model Regulations. "Battery" is not acceptable — "Lithium ion batteries, UN 3480" is. The Safety Data Sheet from your manufacturer states the UN Number in Section 14. Always request the SDS before you book a hazardous shipment.
Some products lack a specific entry and fall under a generic "N.O.S." name. In that case, you must add the technical name in brackets.
Understanding Packing Groups I, II, and III
Packing groups rank how dangerous a substance is within its class. Packing Group I means high danger; Group II means medium; Group III means low danger. This ranking decides packaging strength and the permitted quantity per package.
The same chemical family can split across groups by concentration. A concentrated acid may sit in Group II while a diluted version sits in Group III — the concentration on your SDS directly changes your packaging obligations.
Note that Class 2 gases, Class 7 radioactive material, and some Class 1 items use no packing group. Never assume every class follows the same logic.
Documents You Must Prepare
Every dangerous goods shipment needs three core documents: the Dangerous Goods Declaration, the Safety Data Sheet, and UN-certified packaging. Carriers refuse hazardous cargo without complete, accurate documents. Singapore Customs also requires a correct permit declaration before export. Prepare the full set before you book.
How to Fill the Dangerous Goods Declaration (DGD)
The Dangerous Goods Declaration is the shipper's signed statement that cargo is correctly classified, packed, and labelled. It lists the UN Number, proper shipping name, class, packing group, and quantity. The shipper — not the forwarder — carries legal responsibility for its accuracy.
The IMDG Code mandates the multimodal DGD format for sea freight. An incomplete DGD gives the carrier legal grounds to reject your booking outright. For air freight, the IATA Shipper's Declaration for Dangerous Goods replaces the standard DGD — the document changes with your transport mode.
You sign the DGD as the shipper, accepting liability for its contents. A forwarder can prepare it, but the legal accountability stays with you.
Safety Data Sheet (SDS) and Packaging Certificates
The Safety Data Sheet is a 16-section document describing a substance's hazards and handling. Section 14 states transport classification; Section 9 states physical properties. Packaging certificates prove your boxes meet UN performance standards.
UN-certified packaging carries a UN specification marking embossed or printed on it. You cannot ship Packing Group I or II goods in ordinary cartons. The manufacturer supplies the SDS; the packaging supplier supplies the UN certificate. Collect both before booking.
Limited-quantity and excepted-quantity provisions can relax some packaging rules. These exemptions depend on the substance and quantity per inner package.
The 2 Costliest DG Mistakes ASEAN SMEs Make
Most dangerous goods penalties come from avoidable paperwork errors, not genuine accidents. Each one delays cargo, raises cost, or triggers a fine. These mistakes hit first-time SME shippers hardest because nobody taught them the rules.
Misdeclaration Penalties and Cargo Detention
Misdeclaration means stating cargo as non-hazardous, or as the wrong class, to dodge surcharges. In Singapore, this now triggers penalties at three levels: terminal, national, and carrier. Authorities treat it as a safety breach, not a clerical slip.
From 10 April 2026, PSA Singapore charges a DG Misdeclaration Fee per container: SGD 10,000 for Group 1, SGD 8,000 for Group 2, and SGD 1,000 for Group 3 (PSA Singapore customer advisory, 2026). Fees are subject to change — verify with PSA Singapore before booking. Separately, Singapore Customs can compound an incorrect declaration for up to SGD 5,000 at their discretion, or prosecute serious cases involving deliberate fraud under the Customs Act. The combined exposure dwarfs any surcharge you tried to avoid.
Penalty Layer | Trigger | Penalty | Source |
Terminal (PSA) | Misdeclared or undeclared DG container | SGD 10,000 (Group 1) / 8,000 (Group 2) / 1,000 (Group 3) | PSA Singapore, eff. 10 Apr 2026 |
National (Customs) | Incorrect declaration | Composition up to SGD 5,000 at Customs discretion, or prosecution | Singapore Customs |
National (Customs) | Fraudulent duty or GST evasion | Up to 20× duty and GST evaded, or up to 2 years jail for serious fraud cases | Customs Act |
Carrier | Misdeclaration per bill of lading or container | Carrier-set fee — varies by line | Carrier advisories |
Repeated offences can lead carriers to refuse a shipper entirely. The long-term cost is lost market access, not just one fine.
Lithium Battery Rejections — The E-Commerce Trap
Lithium battery shipments from Singapore face the highest rejection rate among SME e-commerce sellers. Sellers often ship power banks, vapes, and electronics without declaring the embedded batteries. Carriers screen for these aggressively because of in-transit fire risk.
Lithium batteries ship under Class 9, using UN 3480, 3481, 3090, or 3091 (UN Model Regulations). UN 3480 batteries shipped alone already require a state of charge of 30% or less by air. From 1 January 2026, the 30% limit also became mandatory for UN 3481 batteries packed with equipment where the battery exceeds 2.7 Wh rated capacity, under the IATA Dangerous Goods Regulations 67th Edition (IATA, 2026).
PSA Singapore introduced mandatory monitoring for selected battery DG shipments from 1 May 2026. Confirm the current monitoring service fee directly with your carrier before booking, as rates vary by shipping line. A missed step can cost a peak-season sale entirely. Learn the full process through IFG Shipping freight education courses.
Sea vs Air: IMDG Code vs IATA DGR
Your transport mode decides which rulebook governs your dangerous goods shipment. Sea freight follows the IMDG Code, maintained by the International Maritime Organization. Air freight follows the IATA DGR, based on the ICAO Technical Instructions. The two regimes share UN classes but differ on limits, packaging, and documents.
Factor | Sea Freight (IMDG Code) | Air Freight (IATA DGR) |
Governing body | IMO (under SOLAS) | ICAO / IATA |
Core document | Multimodal Dangerous Goods Declaration | Shipper's Declaration for Dangerous Goods |
Quantity limits | Higher tolerance | Stricter, often lower |
Transit speed | Slower, lower cost | Faster, higher cost |
Singapore authority | MPA Singapore | CAAS |
Typical SME use | Bulk chemicals, paints, full pallets | Urgent, high-value, small parcels |
Shipping Dangerous Goods by Sea (IMDG Code)
Sea freight suits most SME dangerous goods because it allows higher quantities at lower cost. The IMDG Code sets the rules for packing, marking, and stowing hazardous containers. Singapore enforces these rules through the Maritime and Port Authority of Singapore.
You must declare cargo to the MPA in advance of vessel arrival or loading. PSA terminals apply strict stowage and segregation rules for incompatible classes — your booking timeline must allow for documentation review.
Some classes face vessel-specific or route-specific restrictions. Not every carrier accepts every class on every service.
Shipping Dangerous Goods by Air (IATA DGR)
Air freight suits urgent, high-value dangerous goods in small quantities. The IATA DGR translates the ICAO Technical Instructions into a practical industry rulebook. Limits are stricter because in-flight risk is higher.
The IATA DGR restricts both quantity per package and total quantity per aircraft type. A shipment legal by sea may be forbidden by air. The Civil Aviation Authority of Singapore oversees air dangerous goods within Singapore. Lithium-ion batteries shipped alone under UN 3480 are, for instance, forbidden on passenger aircraft.
The IATA DGR updates annually, so last year's documents may no longer comply. Always confirm the current edition before you ship.
Singapore-Specific Rules and Process
Singapore layers national requirements on top of the international IMDG and IATA frameworks. Multiple agencies share oversight depending on the substance and transport mode. SME exporters must declare permits correctly and meet local handling rules.
MPA, Singapore Customs, and SCDF Requirements
Three agencies govern dangerous goods in Singapore by role. The Maritime and Port Authority regulates dangerous goods carried by sea. Singapore Customs governs export permits, and the SCDF licenses petroleum and flammable materials.
Exporters lodge permit declarations through TradeNet before shipment. For petroleum and flammable materials above exemption limits, you also need an SCDF licence under the Fire Safety (P&FM) Regulations 2020. For sea cargo, submit the DG declaration to the MPA in advance under Regulations 40 and 44 of the MPA (Dangerous Goods, Petroleum and Explosives) Regulations 2005.
Many SME products escape SCDF licensing entirely. Confirm your exact obligations before you assume the worst.
Which SME Products Are Exempt from SCDF Licensing
Many SME products avoid the SCDF licence despite sounding hazardous. Any mixture with a flashpoint above 60°C is generally exempt, provided it contains no scheduled chemical — this covers most paints, lubricants, and cosmetics that SMEs export. Exemption thresholds are subject to SCDF regulations; confirm current limits at scdf.gov.sg before relying on any exemption.
Both Class 1 petroleum and flammable liquids stay exempt below 20 litres each (SCDF). A small skincare or lubricant exporter therefore often needs no P&FM licence at all. The flashpoint appears in Section 9 of your Safety Data Sheet. Check the SDS before you assume a licence applies.
Any scheduled chemical removes the exemption immediately. Always screen your formulation against the SCDF scheduled chemicals list.
Clearance Time and the DG Surcharge in Singapore
Dangerous goods clearance takes longer than standard cargo because of documentation and segregation checks. Carriers apply a DG surcharge that varies by class and shipping line. Plan extra lead time so a paperwork query never delays your vessel.
Carriers charge a dangerous goods premium per container, set individually by each line — request a written quote before booking, not after. For battery shipments, PSA Singapore's monitoring requirement from May 2026 adds a further service fee; confirm the current rate directly with your carrier as it varies by shipping line.
Accurate first-time documentation removes most delays. Preparation saves more money than any negotiation tactic. For a tailored quote, work with a Singapore freight forwarder experienced in dangerous goods.
FAQ: Shipping Dangerous Goods from Singapore
What are the 9 classes of dangerous goods?The nine classes are explosives, gases, flammable liquids, flammable solids, oxidising substances, toxic and infectious substances, radioactive material, corrosives, and miscellaneous dangerous goods. The UN Model Regulations define these classes globally. Both the IMDG Code and IATA DGR use the same nine-class system.
Do I need a licence to ship dangerous goods from Singapore?
Most dangerous goods require a Singapore Customs permit lodged through TradeNet. Petroleum and flammable materials above exemption limits also need an SCDF licence. Mixtures with a flashpoint above 60°C and no scheduled chemical are generally exempt. Confirm your exact requirement at scdf.gov.sg before booking.
Can an SME ship lithium batteries from Singapore?
SME sellers can ship lithium batteries, but they count as Class 9 dangerous goods under UN 3480, 3481, 3090, or 3091. By air, batteries shipped alone require a state of charge of 30% or less. From 1 January 2026, the 30% limit also applies to batteries packed with equipment where the battery exceeds 2.7 Wh rated capacity, per IATA DGR 67th Edition. Correct declaration prevents the rejections that hit e-commerce sellers most often.
What happens if I misdeclare dangerous goods in Singapore?
Misdeclaration triggers penalties at three levels. From April 2026, PSA Singapore charges up to SGD 10,000 per misdeclared container — fees subject to change, verify with PSA. Singapore Customs can compound an incorrect declaration for up to SGD 5,000 at their discretion, or prosecute serious fraud cases under the Customs Act. Carriers also impose their own fees per bill of lading.
Who is legally responsible for the Dangerous Goods Declaration?
The shipper signs and owns the Dangerous Goods Declaration, accepting legal responsibility for its accuracy. A freight forwarder can prepare the document on your behalf. Accountability for correct classification stays with you, the shipper. Verify every UN Number and packing group before signing.
How much does dangerous goods shipping cost from Singapore?
Dangerous goods shipping adds a DG surcharge over standard freight, set by each carrier. UN-certified packaging and special stowage raise the total further. Battery shipments may also incur a PSA monitoring fee from May 2026 — confirm the current rate with your carrier. Request a detailed quote so every cost line is clear before you book.
Ship Dangerous Goods from Singapore to Malaysia — The Right Way
Most SME exporters shipping across the Singapore–Malaysia corridor get caught on one of three things: wrong UN Number, missing DGD, or undeclared batteries. Each mistake costs more than the shipment itself.
IFG Shipping handles dangerous goods freight from Singapore to Malaysia daily — sea freight, documentation, classification checks, and full compliance support for SME exporters across the corridor.
Two ways to get started:
1. Learn the rules firstNew to dangerous goods? IFG Shipping's freight education resources walk you through classification, document preparation, and Singapore–Malaysia compliance requirements — before your first shipment goes wrong.Explore IFG Shipping freight education →
2. Ship with a specialistAlready know what you're shipping? Send us your product details and we will handle the DG classification check, Dangerous Goods Declaration, and booking — so your cargo moves without delays or terminal fees.Get a Singapore–Malaysia dangerous goods shipping quote →
Talk to IFG Shipping today:
WhatsApp: +60 14-325 8325
Email: contact@ifgshipping.com
Phone (Singapore): +65 6950 5915
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