Safety data sheets by product

Diesel exhaust fluid (DEF) SDS

Diesel exhaust fluid (DEF) (also searched as def, adblue, urea solution) has no single safety data sheet. Each maker writes its own, and Section 2 of the sheet you hold decides what it sets off under OSHA. The employer keeps it readily accessible each shift (29 CFR 1910.1200(g)(8)). 2 official sheets are linked below.

Links checked Oct 21, 2026.

Why does the diesel exhaust fluid (DEF) SDS change with the brand?

DEF is made to a common specification, yet the sheets differ. Dakota Gasification's sheet, revised Feb 20, 2020, lists skin irritation Category 2 with a Warning signal word. The Blue Leaf DEF sheet, issued Nov 25, 2014, says the material is not considered hazardous under the OSHA standard and lists no classification. Both describe a urea and water product, and they reach different answers in Section 2.

The sheets below carry dates from Nov 25, 2014 to Feb 20, 2020.

Where are the official diesel exhaust fluid (DEF) sheets?

Official diesel exhaust fluid (DEF) sheets
Sheet and maker	Number	Date on the sheet	Open
Diesel Exhaust Fluid (DEF)Dakota Gasification Company	none printed	Feb 20, 2020	Open SDS
Blue Leaf Diesel Exhaust FluidMansfield Oil Company, hosted by Brandenburg Industrial Service (distributor)	none printed	Nov 25, 2014	Open SDS

Nothing is hosted here. HazComFast is not affiliated with these makers.

What should I read first on my sheet?

Read Section 2 first, because two sheets for the same urea and water product reach different answers. Dakota Gasification's lists skin irritation with a Warning signal word, and Blue Leaf's lists no classification. A class brings the sheet, the written program, training and workplace labels. No class means that sheet sets off none of them. Check the revision date too, since the Blue Leaf sheet we read is from 2014.

What does your sheet set off under OSHA?

Paragraphs a diesel exhaust fluid (DEF) sheet can set off
If your sheet says	What follows	Paragraphs
Section 2 lists any classification	Written program with chemical list, training, sheet access, labels.	(29 CFR 1910.1200(c), (e)(1), (f)(6), (g)(8), (h)(1); 1926.59)
Section 2 lists no classification	That sheet sets off none of these. The same name can carry another formula.	(29 CFR 1910.1200(c), (d)(1))
The product is a consumer product	Outside the standard at no more than consumer exposure.	(29 CFR 1910.1200(b)(6)(ix))

More for diesel exhaust fluid (DEF)

Related products: Motor oil, Antifreeze.
Label: the secondary container label maker builds one from your sheet (29 CFR 1910.1200(f)(6)).
Another product: SDS Lookup.

Finding the diesel exhaust fluid (DEF) sheet is the easy part

Keeping every sheet read, current and ready for an inspector is the work that never ends. HazComFast does it with your crew: the AI extracts each sheet, and every reading leaves a proof.

Extraction: the AI reads every sheet

Scanned, long or in Spanish, it reads

Drop in the diesel exhaust fluid (DEF) sheet, scanned or not, in English or Spanish. HazComFast reads every page, with progress shown page by page, so a 32-page sheet gets read to the last page.

Every section a foreman needs

Composition, spill response, storage, physical properties, stability and toxicology land on the product page with their source, so the sections a foreman actually needs aren't buried in a PDF.

The AI proposes, a person signs off

Each hazard shows where it came from: extracted from the sheet, or confirmed by a named person on a date. Confidence is measured against the text of the sheet, and below a floor every field is checked by hand before it saves.

A pictogram is never guessed

A pictogram only goes on your label if it's actually on the sheet or follows from its H-codes. H225 on the sheet means GHS02 and DANGER on the label, derived from OSHA's Appendix C.

Checked against 200 real sheets

Every change to the AI is checked against a reference set of 200 real SDSs before it ships. A field it isn't sure about is highlighted for you to check, and the inventory flags products whose extraction hasn't been validated yet.

Proof of reading, without the chasing

Nobody has to remember to ask

Add a hazardous product to a site and every worker there gets one notice with a 7-day due date. A reminder follows at day 3 and an escalation at day 7.

“I read it” can't be a reflex tap

The confirm button stays grey until the worker has scrolled through first aid or to the last page of the PDF and has spent 15 seconds there. The record keeps how long and how far.

A proof of reading the worker keeps

The worker ticks an attestation, and the record keeps which SDS version they read, the server time and the device. They can download their own PDF of it.

A new sheet means a new reading

When a manufacturer updates a sheet and the hazards change, everyone who confirmed the old one is asked to read the new one. Each confirmation keeps which version they read, for which jobsite.

Who read what, in one console

See who hasn't read what, nudge everyone overdue in one click, and export last month's confirmations for one jobsite, each with the SDS version they read.

The reading joins the training file

Each confirmed reading also lands in the worker's training file as a HazCom reading record, so your training records and your SDS records tell the same story.

From the sheet to the label

A label that can't go out empty

A label with five pictograms keeps all five, because the format switches. A label with no hazard information won't print. When the sheet changes, you get a relabeling task with its six-month deadline.

English and Spanish, side by side

Hazard and precautionary statements show in English and Spanish on every product page. A Spanish sheet that says PELIGRO is recorded as DANGER, and the original file stays attached as you received it.

Every print on record

Every print run is logged with exactly what went on the labels. When a hazard changes, the relabel task can only be closed by a print made after the change.

In the field, on the phone

Scan the drum

Scan the QR code on a drum and the page shows the maker and the CAS number under the title, so you know you hold the right one. A drum taken out of inventory still opens its SDS, marked as removed.

Search inside the sheet

Type “eye contact” and you land on first aid. Pinch to zoom on the small print.

Still there with no signal

Offline, the worker opens the sheet itself, with first aid and what to do in a spill. “Available offline” only shows when the PDF is on the phone.

When the inspector asks

The binder, in one click

One click gives you the jobsite's SDS binder, with diesel exhaust fluid (DEF) in it, as a ZIP with a CSV index, and a dated CSV or PDF of who confirmed reading what. That is what you hand an inspector or a GC.

No expired-sheet myth

HazComFast never tells you a sheet has expired, because OSHA doesn't set an expiration date. You choose your own review interval, and the app labels it as your internal policy.

The chemical list behind it

Bring your spreadsheet

Imported products get the same pictograms as ones entered by hand, and importing the same file twice doesn't duplicate anything.

Each product, at every site

Each product page shows every site it's stored at with quantities, and warns you if something incompatible is stored at the same site.

A program that stays true

The chemical list in your HazCom program is built from each jobsite's inventory. Remove a product and the program tells you the list is out of date, with a button to rebuild it.

Start with the free SDS Binder Kit. It works with nothing but a printer.

Free SDS Binder Kit Log in How HazComFast runs SDS management

Free to use as well: the chemical inventory template and the SDS QR code generator. The software side: the chemical inventory in HazComFast.

Questions about diesel exhaust fluid (DEF)

Is DEF a hazardous chemical?

That depends on the sheet for the brand you buy. If Section 2 lists a classification, as Dakota Gasification's does, the product is a hazardous chemical under 29 CFR 1910.1200(c). If it lists none, as the Blue Leaf sheet does, the paragraphs written for hazardous chemicals are not set off by that sheet.

Is a sheet from 2014 still the right one?

Check the revision date and the product name against the container. The Blue Leaf sheet linked here is dated 2014 on its first page, and the maker may have issued a newer one. The date is shown next to each link so you can see it.

Sources and notes

29 CFR in the eCFR: 1910.1200, 1926.59. Verified against the eCFR on Oct 19, 2026. Not legal advice. State Plans can differ.
Classes read in the makers' sheets on Oct 21, 2026. The manufacturer's SDS is the only document that counts.