DIBUTYL PHTHALATE- ▸ Plasticizer: Flexibilizer for polymers, films, and coatings
- ▸ Chemical intermediate: Synthesis of dyes, phthalimide, and anthranilic acid
- ▸ Laboratory reagent: Analytical and laboratory reagent
- ▸ Fragrance: Component in synthetic perfume bases
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
⚠ WARNING: This product can expose you to Di-n-Butyl Phthalate, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Di-n-butyl phthalate (CAS 84-74-2) is an ester of ortho-phthalic acid. It is used as a plasticizer, as a chemical intermediate in organic synthesis, and as a laboratory reagent; it is also used in synthetic perfume bases.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 201-557-4
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Restricted substance — regulatory status
Di-n-Butyl Phthalate (DBP) (CAS 84-74-2) appears on the regulatory list(s) below. This is public regulatory information about the substance — not a statement about any specific supplier’s material, and not a safety claim. Confirm the current status for your jurisdiction and intended use.
- California Proposition 65: listed for reproductive toxicity, listed 2 Dec 2005. A California Proposition 65 warning applies (see the warning above).
- REACH Authorisation List (Annex XIV): use or placing on the EU market after the sunset date (sunset 21 Feb 2015) requires a specific REACH authorisation. Sale and use outside the EU are not restricted by Annex XIV.
- REACH SVHC Candidate List (EU): listed 28 Oct 2008 on the basis of toxic for reproduction (Art. 57(c)), endocrine-disrupting properties (Art. 57(f)). SVHC status triggers EU supplier-communication and notification duties above 0.1% w/w; it is not, by itself, a ban on sale.
Sources: ECHA Candidate List / Annex XIV / Annex XVII (echa.europa.eu); U.S. EPA TSCA; UN Stockholm Convention / EU POPs Regulation; California OEHHA Proposition 65 list. Retrieved 2026-07-13.
Frequently Asked Questions
What is di-n-butyl phthalate used for?
Di-n-butyl phthalate (DBP, CAS 84-74-2) is primarily used as a plasticizer to flexibilize polymers, films, and coatings. It also serves as a chemical intermediate in the synthesis of dyes, phthalimide, and anthranilic acid, as a laboratory reagent, and as a component in synthetic perfume bases.
What are the other names for di-n-butyl phthalate?
It is commonly abbreviated DBP and is also referred to as dibutyl phthalate or n-butyl phthalate. The unambiguous identifier for procurement is CAS 84-74-2 (molecular formula C16H22O4), an ester of ortho-phthalic acid.
How is di-n-butyl phthalate shipped and classified for transport?
For transport documentation it is associated with UN 3082 (N-butyl phthalate). Its HS classification is 2917.34 (esters of orthophthalic acid: other). Refer to the product SDS for the full transport profile and packaging requirements before booking freight.
Is di-n-butyl phthalate the same as DEHP?
No. DBP (CAS 84-74-2) is the di-n-butyl diester, while DEHP is di(2-ethylhexyl) phthalate, a separate compound with a different CAS and longer alkyl chains. Both are ortho-phthalate plasticizers but are not interchangeable in specification.
What is the cost of bulk di-n-butyl phthalate?
Bulk pricing depends on grade, packaging (drums, IBCs, totes), volume, and destination. Request a current quote with your target quantity and ship-to location; we supply a CoA and SDS with each shipment.
What is the REACH and TSCA regulatory status of Di-n-Butyl Phthalate (DBP)?
Di-n-Butyl Phthalate (DBP) (CAS 84-74-2) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 201-557-4).