CAS 90-04-0 · Ortho Anisidine

Ortho Anisidine: direct from source to Europe

Ortho Anisidine (CAS 90-04-0) is a pale yellow to amber liquid, the ortho isomer of anisidine, used as an intermediate for azo pigments, dyes and pharmaceutical synthesis.

  • COA, SDS & TDS with every batch
  • REACH status confirmed before quote
  • Samples available for qualification
Purityup to 99%+GC purity, premium grade
Lead time3 – 6 weeksOrigin to European port
FormLiquidDrums to ISO tank
Response1 business dayQuotation after receiving your spec
Product identification

Ortho Anisidine: names, synonyms and identifiers

Buyers search for this material under several names. Whichever one appears on your specification, purchase order or REACH dossier, it is the same compound: Ortho Anisidine, CAS 90-04-0.

  • Confirmed CAS number on every COA
  • Premium grade with GC purity 99%+ available
  • TDS and SDS supplied with every shipment
Common name
Ortho Anisidine
Synonyms
o-Anisidine · 2-Methoxyaniline · 2-Aminoanisole
CAS number
90-04-0
Formula / MW
C7H9NO  /  123.15 g/mol
Chemical family
Anisidine (methoxyaniline)
HS code
2922 (amino-compounds with oxygen function). Confirm the full code with your broker.

⚠ Not the same as Para Anisidine (104-94-9) or Meta Anisidine (536-90-3). Always match CAS 90-04-0.

Technical data

Ortho Anisidine physical and chemical properties

Key parameters for process engineering, safety planning and storage design. Values are typical; always verify against the current TDS for your lot.

Appearance
Pale yellow to amber liquid
Darkens on air and light exposure
Melting point
5–6 °C
May solidify in cold transit
Boiling point
Approx. 225 °C
Typical value
Molecular weight
123.15
g/mol
Molecular formula
C7H9NO
Anisidine (methoxyaniline)
Solubility
Low in water
Miscible with common organic solvents
Physical form
Liquid
At room temperature
Storage
Cool & dry
Closed container, away from light and air
Quality & specification

Ortho Anisidine grade specifications: standard vs premium

Two grades are offered so your process chemist or quality team can pick what suits downstream requirements. COA parameters are confirmed before every shipment.

Parameter
Standard grade
Premium grade
Test method / note
GC purity
≥ 98.0%
≥ 99.0%
GC area %
Meta + para isomer
≤ 1.0%
≤ 0.3%
GC
Water content (KF)
≤ 0.15%
≤ 0.08%
Karl Fischer titration
Colour (APHA)
≤ 100
≤ 40
APHA / Pt-Co scale
Appearance
Pale yellow to amber liquid
Pale yellow liquid
Visual check

All values are specification limits, not guaranteed minima. Actual COA figures for your lot are provided before dispatch. Non-standard specifications are available on enquiry.

Applications

Where Ortho Anisidine is used

Typical end uses and synthesis routes for European manufacturers, toll processors and laboratories.

Azo pigment intermediate

Diazo component for Pigment Red and Pigment Orange families.

Dye intermediate

Feed for azo and disperse dyes.

Pharmaceutical intermediate

Methoxyaniline building block for APIs and advanced intermediates.

Custom synthesis

Starting material for contract synthesis of anisidine derivatives.

Packaging & logistics

Packed to your site, documented for customs

Ortho Anisidine is handled as a dangerous good. Every shipment leaves with UN-approved packaging, CLP labelling and the full document set for European import.

Drums

Steel drums

UN-approved steel drums with secure closures, palletised.

Up to 250 kg net
IBC

IBC / flexitank

UN-approved IBCs or flexitanks for higher-volume users.

On request
Bulk

ISO tank / bulk

ISO tank containers or bulk supply for suitable receiving sites.

On request
Document set included: Bill of lading · Commercial invoice · Packing list · Certificate of analysis (COA) · Safety data sheet (SDS) · Dangerous goods declaration (IMDG/ADR) · Certificate of origin · Other certificates on request
Common questions

Ortho Anisidine: frequently asked questions

Quick answers for European buyers. For anything else, email source@cheloragroup.com.

It is also sold as o-Anisidine, 2-Methoxyaniline, 2-Aminoanisole. All refer to CAS 90-04-0. Confirm the CAS number with any supplier before ordering.

Price depends on grade, volume, packing, Incoterm and destination port, and moves with raw material markets. Send us your requirement and we will quote in EUR or USD with a landed-cost breakdown, usually within one business day.

Ortho Anisidine (CAS 90-04-0) is a pale yellow to amber liquid, the ortho isomer of anisidine, used as an intermediate for azo pigments, dyes and pharmaceutical synthesis.

Standard grade offers 98.0% minimum GC purity. Premium grade offers 99.0% minimum with lower isomer content and better colour. Premium is recommended for pigment synthesis routes needing consistent shade.

The isomers differ in the position of the methoxy group relative to the amine, which changes reactivity and downstream shade in pigment synthesis. Ortho Anisidine (90-04-0) is the isomer most widely used for azo pigments. Order by CAS to get the isomer you need.

Aromatic amines can face REACH, CLP and workplace-exposure obligations depending on use. We confirm the current status for your application before quoting.

Store in closed containers in a cool, dry, ventilated place, protected from light and air, which promote darkening and oxidation. Use within the shelf life stated on the COA and TDS.

It is generally treated as a dangerous good for transport (class and UN number per SDS; always confirm on the current SDS). We pack it in UN-approved containers, apply CLP labels and ship through licensed forwarders under IMDG for sea and ADR for European road.

Yes. Laboratory and pilot samples are supplied with a COA and SDS so your team can qualify the grade. Mention sample needs in your enquiry.

REACH status is confirmed before we quote. We advise on importer-of-record arrangements and whether the substance is registered for your use. Send your use descriptor and we will confirm.

Ready to source?

Get your Ortho Anisidine quotation today

Send us the grade, volume, destination and Incoterm. You will receive a clear price, packaging options and a full document checklist, usually within one business day.

  • Samples to full containers
  • COA, SDS and DG documents included as standard
  • Quote in EUR or USD, your choice of Incoterm