What Is an MSDS and Why Should Candle Makers Read It?

MSDS, SDS: the same document under two names

For decades the document was called a Material Safety Data Sheet, and formats varied from supplier to supplier. The globally harmonised system for classifying and labelling chemicals standardised both the name — Safety Data Sheet — and the structure, fixing sixteen numbered sections in a set order so that anyone can find the storage advice or the first-aid instructions in the same place on any sheet. Most Indian suppliers, buyers and marketplace forms still say MSDS out of habit. When somebody asks you for an MSDS, send the safety data sheet; they are asking for the same thing.

It is worth being precise about who the document is written for, because that explains everything odd about its tone. It is written for the person handling the material: a warehouse worker, a courier, a workshop, an emergency responder. It is not consumer information and it is not marketing. That is why it will tell you what to do if a litre of the stuff hits a floor drain, and will tell you nothing at all about whether the fragrance is any good in soy.

One practical consequence for Indian makers: CSI’s fragrance oil pages are written as product pages, and they do not carry storage instructions or a safety sheet. The wax pages do publish some storage detail — the Luxury Soy Wax CSI 464 page gives a shelf life of 60 months in cool, dry storage away from sunlight and moisture, and the Premium Coconut Soy CSI 468 page gives the same shelf life and asks that the pack is kept sealed. For an oil, that information is in the sheet, and the sheet comes on request rather than on the page. Ask for it: +91 7397976926.

The sixteen sections, and what each one is for

Here is the whole document in one table. Read the right-hand column and you will see immediately why six of them matter to a candle maker and ten of them are filing.

Two of those rows deserve a warning label of their own. Section 11 is toxicological information, and it is the section from which people extract the most damaging sentences — a phrase written to describe a concentrated material under test conditions, lifted onto a product listing, becomes a claim you cannot defend. Do not quote from it. And section 15 is written about the material as supplied in the markets the supplier serves; it does not tell you what your own business must do, and no supplier’s document substitutes for advice from your own adviser.

The six sections that change what you do

Section 2 — what the neat oil is classified as

This is the sheet’s summary judgement on the material in the bottle: the classification, any pictograms, the signal word and the hazard statements. Fragrance compositions commonly carry statements relating to skin sensitisation and to effects in the aquatic environment; what any particular oil carries is on its own sheet, and the only honest way to know is to read it rather than generalise. What section 2 is not is a verdict on your candle, and it is not a reason to describe an oil as dangerous to a customer. It is a description of a concentrated liquid that you, not your customer, are handling by the kilo.

Section 4 — first aid, which belongs on a wall

Eye contact, skin contact, inhalation, ingestion, each with an instruction. This is the section nobody reads until the afternoon they need it, at which point they are reading it on a phone with one eye shut. Print the four lines, tape them inside the cupboard door where the oils live, and add the number of your nearest clinic. It costs one sheet of paper. A workshop with a child or a helper in it should have this up before it has anything else.

Section 5 — what to put a fire out with

A candle workshop contains melted wax at 80–90°C, an electric heat source and, in most cases, an alcohol-based cleaning spray. Section 5 names suitable extinguishing media for the material in question, and the useful habit is to read it for every liquid on the bench — including the Isopropyl Alcohol Spray at ₹383.00 for 150 ml or ₹520.00 for a litre, which is a different class of liquid from a fragrance oil and should not be stored beside a melter. Do not assume water. Read the sheet.

Section 7 — handling and storage, which becomes a shelf

The section most worth your time. It will address container closure, ventilation, temperature, incompatible materials and keeping the product away from ignition sources. Turned into a workshop rule for Indian conditions, it means: a closed cupboard rather than a sunny windowsill, a shelf that is not the one above the melter, bottles sealed after every use, and no decanting into unlabelled containers. In Delhi, Ahmedabad or Nagpur an interior room in May is a different environment from a top-floor balcony store, and in Mumbai, Kochi or Kolkata the monsoon adds a humidity problem that mainly shows up as corroded caps and faded labels.

Section 9 — the numbers, including the one you weigh with

Flash point, density or specific gravity, appearance, odour, solubility. Two of those change how you work. The flash point is a transport, storage and handling property and belongs in your records — across CSI’s 92 oil pages 16 publish a numeric one, running from 85°C on the Neroli page and 93°C on the Palo Santo page up to 203°C on the Sandalwood page and 206°C on the Vetiver page; where a page publishes none, the sheet is the place to look rather than an estimate. The density figure matters for a duller reason: fragrance compositions are generally not one gram per millilitre, so measuring oil by volume introduces an error into every single candle you pour. That is why every load on CSI’s pages is stated as a weight.

Section 14 — the courier’s question

Transport information: whether the material is classified as a dangerous good for carriage and, if it is, under what class and number. This is the section that suddenly matters when a logistics partner, a freight forwarder or a marketplace onboarding form asks. For flammable liquids the classification threshold is a flash point at or below 60°C, and every numeric flash point published across CSI’s oil pages sits above that — but a classification statement is a statement on a sheet, not something to infer from a product page, and if a carrier asks you the question, send them section 14 rather than your own reasoning.

What the sheet says about the bottle, not your jar

This is where most of the confusion in Indian candle groups comes from, and it runs in both directions. One maker reads a hazard statement on a sheet, panics, and decides fragrance oils are unsafe to work with. Another reads that a candle contains only 8% fragrance, decides the sheet is irrelevant, and keeps five kilos of assorted oils in an open crate next to the melter. Both have misread the same document.

What is actually true is a matter of quantity and form. At the series unit — 200 g of Luxury Soy Wax CSI 464 with 16 g of oil at an 8% load — the finished candle is a 216 g solid in which the fragrance is held in the wax, not a free liquid. The bottle on your shelf is the opposite: a concentrated liquid, often a kilo of it, handled repeatedly by you. The sheet is written about that bottle because that bottle is where the handling risk is concentrated. So the sheet governs the workshop — storage, decanting, weighing, spills, cleaning — and it does not govern the label on a candle you sell.

Turning section 7 into a rule you can actually follow

A sheet that lives in a downloads folder changes nothing. The point of reading section 7 is to end up with four decisions you make once and then stop thinking about. Here is the version that works in a home workshop or a small production room in India.

The file a retail or corporate buyer is really asking for

When a procurement team writes “please share your product safety documentation”, they are not expecting one document. They are expecting a small pack, and the reason small Indian brands lose a fortnight to this is that they go looking for it only after the request arrives. Build it once per oil, as you adopt the oil, and the request becomes a five-minute reply.

Notice how much of that folder is yours rather than your supplier’s. The two documents CSI provides on request are the smaller half. The rest is the record of what you did, and it is the part that turns a supplier’s paperwork into evidence about your product. A hundred-candle corporate order on Luxury Soy Wax CSI 464 with Eucalyptus Spearmint at 8% is 20 kg of wax, 1.6 kg of oil and a hundred wicks — ₹15,646.80 in raw materials, or ₹156.47 a candle — and the buyer who places it will ask about the documentation before they ask about the price a second time.

Timing matters more than completeness in the Indian festive calendar. Diwali 2026 falls on 8 November 2026, which puts corporate gifting enquiries through September and October and most pours into the second half of October, so that a fortnight of cure is done before anything ships. A documentation request arriving in the third week of October, against a batch you are already pouring, is the worst possible version of this conversation. Two WhatsApp messages in July would have settled it.

What an MSDS is not

The document has authority within its scope and none outside it, and the scope is narrower than the way it gets waved around in sales conversations suggests.

The second row is worth a paragraph on its own, because it is the claim most often made by small Indian brands with good intentions. “Non-toxic” is not a description of a candle — it is a claim about health, it is not something a safety data sheet says, and it is not something a supplier’s document licences you to print. The honest and more persuasive alternative is specificity: name the wax grade, state the fragrance load as a percentage of wax weight, give the cure time, describe the wick, and print a real burn instruction — first burn to a full melt pool, trim to about 5 mm, never leave a burning candle unattended. Customers trust that more than an adjective, and you can stand behind every word of it.

And a final honest note about cost, because two CSI reviews raise delivery charges and it would be glib to pretend documentation is effortless. Requesting a sheet is free. Reading it is twenty minutes. Building the habit — one folder per oil, updated as you adopt each — is the part that takes discipline, and a maker with fifteen oils on the shelf who leaves it until the week of an audit will hate every minute of it. Start with the four or five oils that actually earn you money. That covers almost every question you will ever be asked.

Frequently asked questions