Shipping coconut shell charcoal under UN 1361 — what changed, and what to ask your supplier
If your supplier still talks about passing the self-heating test, they are describing a rule that no longer exists.
The rule changed, it is in force, and a great deal of the trade is still describing the old one. This page is written from the buyer's side: what actually changed, whether it applies to coconut shell charcoal, what a producer now has to do, and the three documents that tell you whether yours has caught up.
§1 · What changed
Amendment 42-24 to the maritime dangerous-goods code removed two exemptions and introduced one provision in their place.
- Special Provision 925 was deleted in its entirety, and Special Provision 223 no longer applies to this entry. Those were the two routes by which charcoal avoided dangerous-goods status.
- Special Provision 978 replaced them. It sets conditions rather than offering an exemption, which is the whole of the difference.
- The test route is closed. The provision states that the UN N.4 self-heating test shall not be used to exempt carbon of animal or vegetable origin. Passing it no longer removes anything. Without testing, the material is assigned to at least Class 4.2, packing group III.
- The dates. Voluntary from 1 January 2025, mandatory since 1 January 2026.
Why the regulator acted: the same carrier and protection-and-indemnity advisories that circulate the change also carry a count of container fires linked to charcoal — at least 68 between 2015 and 2022, typically beginning days after loading. That is the whole of what this page says on the subject. It explains a regulator's decision and it is not a statement about what will happen to your cargo.
§2 · It applies to coconut shell, and the provision says so
The provision defines the entry's scope explicitly: carbon produced by pyrolysis of an organic material, with bone, bamboo, coconut shell, jute and wood given as its own examples. Coconut shell is named. There is no argument to be had about whether coconut shell charcoal sits inside or outside it, which makes this the shortest section on the page.
A sharp reader will notice that this is the opposite of our position on tariff classification, where we say the coconut argument is arguable rather than settled. Both follow the same method: we say what the text says. Where a provision names the material, as this one does, we state it. Where a classification rests on reading a heading that does not name it, we call that an argument and say what it rests on. Consistency of method, not of conclusion.
§3 · The four things a producer now has to do
Summarised in our own words. We are not reproducing the provision here: the text is in the Code and in the carrier advisories that circulate it, and a fourth copy of it on a supplier's website is worth nothing to you.
1 · Weathering before packing
After production, the unpacked material is weathered — stored under cover but in open air — for a minimum of 14 days before it is packed. The provision offers one alternative route: steam and cooling after pyrolysis, packing under inert gas, then a minimum of 24 hours before transport.
2 · Temperature at packing
The material must not exceed 40 °C on the day it is packed. This is a condition on the packing day rather than a property of the cube, and it is the same physics as moisture reabsorption approached from the other side — what a cube does with water and heat over months in store is the same material behaviour that makes a hot container a problem on day one.
3 · Packaging
UN-specification packaging, approved and marked as such. The marking is the part a buyer can read: it carries its own approval code, and a packaging specification without one is not the thing the provision asks for.
4 · Stowage — carrier practice rather than provision text
Carrier guidance sets headspace and stack limits, and the figures in circulation are headspace of 30 cm or more, with stack height about 1.5 m. We separate this from the first three deliberately: those are conditions in the provision, while these are numbers that appear in advisories rather than figures we have read in the Code ourselves. Treat them as what your carrier is likely to work to, and confirm them with the carrier on your lane.
What the first requirement costs
The weathering period is the commercially interesting one, because it is lead time. Material sitting under cover, not packed, not shipped and not invoiced, is a real cost and it has to appear somewhere in a schedule. A supplier who quotes a production plan with no weathering window in it has either not costed it or is not doing it. That inference is ours rather than a rule, and it is the one item on this page you can test against a document you already have — how lead time is quoted and what it runs from.
Our own stock is weathered before an order is confirmed, so the window is not inside the lead time we quote you. That is a claim about sequence rather than about duration, and it is checkable in the ordinary way: the weathering certificate in §4 is dated to the batch, and the date either precedes your order or it does not. How many days we weather is a separate figure and we do not publish it — see §8.
§4 · Three documents, by name
This is the part to use. Rather than assessing a supplier's compliance yourself, ask for three documents and read the answer you get.
| Document | What it proves | Ask for it |
|---|---|---|
| Dangerous Goods Declaration | That the shipment is declared as UN 1361, Class 4.2, packing group III. | Every shipment |
| Weathering certificate | That this batch was weathered before it was packed, with a date on it. | Every shipment, dated to the batch |
| Vanning survey | That the container was stuffed to the stowage figures in §3. | Every shipment |
A supplier who produces all three routinely has adapted to the change. A supplier who has to ask what you mean has not. That distinction replaces every judgement call you would otherwise have to make about whether the reassurance you are hearing is competence or an out-of-date understanding, and it takes one email.
The middle one is the document that did not exist before this provision, which is why it is the most diagnostic of the three. A weathering certificate dated to the batch is difficult to produce if the batch was not weathered.
§5 · What a supplier who hasn't caught up sounds like
- “It passes the self-heating test, so it ships non-DG.” — The deleted route, described as though it were current. This is the most common one and it is usually a supplier working from an understanding that was correct two years ago.
- “Charcoal isn’t dangerous goods from Indonesia.” — No origin exemption exists, and none ever did. The entry is about what the material is, not where it was made.
- “We declare it as a coconut product.” — Misdeclaration, and not ignorance. It is also your problem rather than only theirs: your name is on the commercial documents, and a misdeclared consignment is misdeclared in your name.
- “We can ship this week.” — Said about material produced this week, it is a schedule with no weathering window in it. That is the one of the four you can check against a production plan rather than against a document.
Three of those four are our assessment of ignorance rather than an accusation of dishonesty, and we would rather say so plainly: the route described in the first one was correct for years, it closed recently, and a good deal of the material a supplier might be working from still describes it. The third is different. Declaring charcoal as something other than what it is is a decision rather than a gap in reading, and the consequence lands on the buyer named in the documents as well as on the shipper.
§6 · What this page is not
- We are not a customs or dangerous-goods authority. Classification for any given consignment is the shipper's and the carrier's determination, and nothing here is a determination of yours — what this site does and does not claim sets that out, and it governs this page in particular.
- This is the maritime code only. Road and rail regimes have not embedded the same conditions, and a multimodal move may be inconsistent across its legs. Ask about each leg separately.
- We have read the provisions in carrier and protection-and-indemnity advisories, not in the Code text itself. Saying so costs us nothing and it is what our verification policy promises. If your broker reads the Code and finds we have summarised it wrongly, we want to hear about it.
§7 · Questions buyers actually ask
Does this make charcoal more expensive to ship?
Yes, in lead time and in documentation. We publish no figure for it, because the dangerous-goods element of a freight rate is a matter for your lane and your carrier rather than for a web page. Ask your forwarder what the surcharge is on the route you actually use, and ask whether it changed with the provision.
Can a laboratory test still get us an exemption?
No. That is the specific route the provision closed, and it closed it by name. A passed self-heating test does not remove the classification for this material, and a supplier offering a test result as though it did is offering you the deleted rule.
Our last shipment moved as “non-DG”. What does that mean?
One of two things: it moved before the mandatory date, or it was misdeclared. Both are worth knowing about, and they are different problems. The commercial documents from that shipment will tell you which, and your own name is on them.
Our supplier says their packaging is enough on its own. Is it?
Packaging is one of the four requirements rather than a substitute for the others. The weathering period and the packing temperature are conditions on the material before it reaches the packaging, and no packaging specification addresses them.
Reviewed by Mohamed Noor, Director —
§8 · What supports the above
This is the first page on this site where most of the ledger is simply stated as fact. That is unusual here and it is worth saying why: every other page rests on our own product reasoning or on methods we propose ourselves, while this one rests on a published regulation. Where the page does reason rather than report, the last two rows say so.
| Claim | What supports it | How we state it |
|---|---|---|
| SP 925 was deleted, SP 223 no longer applies to this entry, and SP 978 replaced both. | The amendment and the provisions are published. | Stated as fact. |
| The provision was voluntary first and has been mandatory since the date in §1. | Published transition dates. | Stated as fact, with both dates in §1. |
| The N.4 self-heating test may no longer be used to exempt this entry. | The provision says so for carbon of animal or vegetable origin. | Stated as fact. It is the sentence the rest of the page follows from. |
| Coconut shell is named in the scope of the provision. | The provision lists it among its examples of pyrolysed organic material. | Stated as fact, and the reason §2 is short. |
| The weathering minimum before packing, and the inert-gas route offered in its place. | Conditions set by the provision. | Stated as fact, with the figures in §3. |
| The maximum material temperature on the day of packing. | Condition set by the provision. | Stated as fact, with the figure in §3. |
| The count of container fires behind the change. | The carrier and protection-and-indemnity advisories that circulate the rule change. Not a figure we hold or have checked against a casualty database. | Stated with attribution to those advisories, once, as why a regulator acted. It is not a statement about what will happen to a buyer’s cargo, and this page makes no claim of that kind anywhere. |
| The stowage figures: headspace and stack height. | Carrier advisories. We have not read these as numbers in the Code. | Stated as carrier guidance rather than as provision text, which is why §3 separates the fourth requirement from the first three. |
| A production schedule with no weathering window in it means the weathering is not being done. | Our reasoning from the lead time the provision costs. Not a finding about any named supplier. | Our reasoning, labelled as ours in §3 and §5. |
| Our own stock is weathered before an order is confirmed. | How we hold stock. A statement about sequence, not about duration — the number of days is not published and §8 says so. | Stated as fact about our process, and checkable against a weathering certificate dated to the batch. |
| Most “non-DG” claims from suppliers are out of date rather than dishonest. | What the trade material still in circulation describes, and how recently the route it describes closed. | Our assessment, labelled as ours in §5. The misdeclaration case is the exception and §5 names it as one. |
What this page does publish about our own operation is one thing: that the weathering window is spent before an order is confirmed, which is §3. That is when, and it is not how long. The period itself, our packing temperature, and whether we issue the weathering certificate and vanning survey as standard or only on request are three figures we do not hold in a form we would publish, and §3 states the regulation rather than a practice of ours for exactly that reason.
§9 · What to ask before your next booking
Three requests, in the order that gets you an answer fastest. Send them to whoever quotes you, not to whoever sells to you.
- Send the Dangerous Goods Declaration from our last shipment, and the one you intend to raise for the next.
- Send a weathering certificate dated to the batch you are proposing to ship, not a specimen and not a policy statement.
- Show me where the weathering window sits in the production schedule you have just quoted me.
The third one is the question this whole page is for. A schedule that accounts for the weathering period is evidence of a producer who has read the provision; a schedule that does not is the finding, whatever the first two documents say.
Request the 1 kg sample, and ask us the three questions above while it is in transit