Cellulose Acetate Butyrate CAS 9004-36-8

Cellulose Acetate Butyrate CAS 9004-36-8 Information

CAS	9004-36-8
Molecular formula	/
Molecular weight	0
EIENCS	618-381-2
Form	Granular Crystalline Powder
Melting point	127-240 °C
boling point	/
Density	1.25 g/mL at 25 °C(lit.)
Solubility	Practically insoluble in water, soluble in acetone, in formic acid and in a mixture of equal volumes of methanol and methylene chloride, practically insoluble in ethanol (96 per cent).
PKA	/
Color	White
Storage temp

What is Cellulose Acetate Butyrate CAS 9004-36-8?

Chemical Name: Cellulose Acetate Butyrate

Molecular formula: Non-single molecular formula (cellulose esterification derivative), typical structure contains acetyl group (C₂H₃O₂⁻) and butanyl group (C₄H₇O₂⁻)

CAS Number: 9004-36-8

EINECS number: 618-381-2

Appearance: White to off-white powder or granules, odorless and tasteless

Density: 1.15-1.22 g/cm³ (20℃)

Melting point: 127-240℃ (due to differences in substituent content)

Solubility

Soluble in ketones (acetone), organic esters (ethyl acetate), and alcohols (high butanyl content type);

Insoluble in water, ethanol (96%), saturated hydrocarbons (such as gasoline)

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Cellulose Acetate Butyrate CAS 9004-36-8 Use

(1) Coatings and inks

Function:

Improve leveling property, prevent sagging, and shorten drying time (increase the drying efficiency of automotive paint by 30%);

Promote the directional arrangement of metallic pigments (such as aluminium powder) and enhance the gloss of the coating;

Uv-resistant and anti-yellowing, it is suitable for outdoor signs and automotive lamps.

Scene:

Automotive paint: touch-up paint (quick-drying, easy to polish), original factory paint (weather resistance >5 years);

Wood coatings: Enhance scratch resistance and transparency.

(2) Plastics and films

High-performance films: oil-resistant/gasoline-resistant packaging films, photosensitive film bases (such as aerial photography);

Engineering components

Tool handle (impact resistance strength >580 J/m)

Cable ducts, steering wheel (insulation, cold resistance -40℃).

(3) Emerging fields

Biodegradable materials: food packaging, agricultural covering films (driven by environmental protection policies);

Pharmaceuticals and cosmetics: Sustained-release carriers for drugs, nail polish film-forming agents (biocompatibility).

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Cellulose Acetate Butyrate CAS 9004-36-8 safety

Health risk:

Low toxicity (oral LD₅₀ >2000 mg/kg in rats), but the dust irritates the respiratory tract;

When operating, a dust mask (N95), goggles and impermeable gloves must be worn.

Environmental risk:

The production wastewater contains organic acids and needs to be pre-treated (adsorbed by activated carbon) before being discharged.

Storage requirements:

Keep sealed and away from light. Temperature <30℃, humidity <60% (shelf life 2 years).

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