Does the “603” designation define one fixed tristyrylphenol ethoxylate composition?

No. “603” is a commercial grade label, while CAS 99734-09-5 describes a tristyrylphenol-ethoxylate distribution. Confirm the supplier’s nominal EO level, hydroxyl value, water, pH, cloud-point method, and physical form. These properties determine formulation behavior more reliably than the grade label alone.

Can a neat 603 grade be compared directly with a diluted tristyrylphenol ethoxylate product?

Not without recalculation and testing. CAS 99734-09-5 products may be supplied as nearly anhydrous ethoxylates or as aqueous solutions with different active content and EO profile. Compare active matter, carrier, cloud-point method, pH, water, physical form and performance at equal active dosage.

Tristyrylphenol Ethoxylate 603 CAS 99734-09-5

Tristyrylphenol Ethoxylate 603, CAS No. 99734-09-5 and ECHA List No. 619-457-8, is a commercial nonionic agrochemical-emulsifier grade. It is an ethoxylate distribution, not one molecule with a universal HLB, cloud point or physical form. The 603 designation must be tied to the offered grade specification. Buyers should compare nominal EO, hydroxyl value, water, pH, cloud-point method and formulation performance using the current TDS and batch COA, and review the SDS for the intended market.

CAS: 99734-09-5
Synonyms: Agricultural Emulsifier 603, Tristyrylphenol Ethoxylate, Polyethylene Glycol Mono(tristyrylphenyl) Ether, Polyoxyethylene Tristyrylphenyl Ether, TSPE
Einecs: 619-457-8 (ECHA List)
Molecular Formula: (C₂H₄O)ₙC₃₀H₃₀O; tristyrylphenol ethoxylate distribution
Grade: Specify the 603 reference grade, nominal EO, hydroxyl value, water, pH, physical form, cloud-point method, active ingredient or formulation system and destination; compare the current TDS and batch COA.
Package: State required quantity, physical form and destination; confirm the current bag or container, liner, net weight, temperature handling and transport requirements before quotation.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Product identity	Tristyrylphenol ethoxylate; polyethylene glycol mono(tristyrylphenyl) ether
CAS / List	99734-09-5 / 619-457-8 (ECHA List)
Composition	Tristyrylphenol ethoxylate distribution; nominal EO level is grade-specific
Physical form	Viscous liquid, paste or solid depending on EO level, temperature and supplied grade
Key quality controls	Nominal EO, hydroxyl value, water, color, pH, cloud point or other supplier-defined solution and emulsification tests
Regulatory scope	Formulation use and inert-ingredient acceptability must be checked for the target crop, market and application pattern

Applications and grade selection

Agricultural Emulsifier 603 is evaluated as a nonionic emulsifier, wetting or dispersing component in crop-protection concentrates. Suitability for EC, EW, ME, SC or other systems depends on the active ingredient, solvent or carrier, co-emulsifiers, water hardness, dilution ratio, temperature and destination-market rules.

Screen candidate grades in the exact active and solvent system rather than selecting only by CAS number.
Test concentrate clarity or dispersion, emulsion spontaneity, dilution stability, cream or sediment, temperature cycling and hard-water performance.
Confirm the permitted regulatory role and documentation for every destination before commercial use.

Storage and handling

Keep sealed in a dry, ventilated area within the supplier’s stated temperature range. Follow the exact TDS for warming, homogenization and sampling if the product becomes more viscous or changes physical form.

Safety, documentation and procurement

Use the current SDS for PPE, spill response, transport and environmental handling. A purchase inquiry should state the active and formulation type, reference grade, EO or analytical limits, water hardness test, quantity, package, destination and regulatory documents.

For emulsifier selection across agricultural and industrial formulations, review Paraffin Emulsifier 58, Octylphenol Ethoxylate OP-10, and Polysorbate 60.

FAQ - Technical & Supply Chain

Q:
Does the “603” designation define one fixed tristyrylphenol ethoxylate composition?

A: No. “603” is a commercial grade label, while CAS 99734-09-5 describes a tristyrylphenol-ethoxylate distribution. Confirm the supplier’s nominal EO level, hydroxyl value, water, pH, cloud-point method, and physical form. These properties determine formulation behavior more reliably than the grade label alone.
Q:
Can a neat 603 grade be compared directly with a diluted tristyrylphenol ethoxylate product?

A: Not without recalculation and testing. CAS 99734-09-5 products may be supplied as nearly anhydrous ethoxylates or as aqueous solutions with different active content and EO profile. Compare active matter, carrier, cloud-point method, pH, water, physical form and performance at equal active dosage.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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