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Akzo Nobel Chemicals

Akzo Chemical: Letter from Pamela Cook to Lisa Hunter

AKZO NOBEL Polymer Chemicals
June 11, 1996

Ms. Lisa M. Hunter
USEPA Office of Policy, Planning and Evaluation
Washington, DC 20460

RE: Project XL Information Request Akzo Nobel Chemicals Inc.

Dear Ms. Hunter:

Attached is the information requested on the project time line, relative toxicity of the substitute chemical and a proposal evaluation plan. Should you have any question please call me.



Pamela J. Cook
Sr. Environmental Engineer

cc: G. Martens - Akzo Nobel
J. Miller - Akzo Nobel

Akzo Nobel Chemicals Inc.
2153 Lockport-Olcott Road
Burt, New York 14028
Tel. (716) 778 8554
Fax (716) 778 7930

Time line for DMP reaction substitution:

August 1996 - Equipment modification necessary to conduct trials
September 1996 - Conduct plant trials
September - December 1996 - Customer acceptance trials
January - March 1997 - Permanent equipment modification/installation
April 1997 - Commissioning
May 1997 - Commercialization

Probability of success of this project is greater than 90%.

Evaluation plan - If the specific information on the identity of the substitute compound is required, then this information will be supplied in a separate confidential document.

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Physical Property/Toxicity Comparison (all information taken from supplier MSDS)

Dimethyl Phthalate Substitute Chemical

Physical Properties
Molecular Weight 194.19 286.42
Specific gravity 1.19 0.945
Vapor Pressure @ 20°C 0.0011 mmHg 0.0007 mmHg
Evaporation Rate negligible not applicable
Solubility in Water 5.0 g/l slight 0.0015 g/l negligible
Flash Point 146°C 128°C

Toxicological Information
Inhalation low hazard low hazard
Eyes may cause transient irritation low hazard
Skin low hazard low hazard
Ingestion expected to be low hazard expected to be low hazard
Acute Toxicity Date
Oral LD-50 (rat) 6.9 ml/kg >3.2 g/kg
Oral LD-50 (mouse) 7.2 ml/kg >6.4 g/kg
Inhalation LD-50 (rat) not available >5.3 mg/L/6 hours
Dermal LD-50 (rabbit) > 10 ml/kg (guinea pig) > 20 ml/kg
Skin irritation (species not specified) none (guinea pig) slight
Skin sensitization (human) none (guinea pig) none
Eye irritation (human) slight (rabbit) very slight

Ecological Information
COD 1.70 g oxygen/g
ThOD 2.40 g oxygen/g
BOD-5 High Low
1. 18 g oxygen/g not determined because the
aqueous solubility of the
was below that which is
required for these tests
Oxygen depletion potential high low
Potential to affect aquatic organisms moderate low
Potential to affect secondary waste moderate potential to affect low potential to affect
treatment microbial metabolism respiration
Potential to bioconcentrate low low
Potential to biodegrade high high

Acute Aquatic Effects Data
48-h EC-50 (daphoid) >52 mg/l; NOEC: >9.6 mg/l >1.46mg/l; NOEC:1.46 mg/l
96-h LC-50 (fathead minnow) 120 mg.l >1.55mg/l; NOEC:1.55mg/l
96-h LC-50 (ramshorn snail) >100ml/l >1.55mg/l; NOEC:1.55mg/l
96-h LC-50 (flatworm) >100 ml/l >1.55mg/l; NOEC:1.55mg/l
Bioconcentration factor 57 (bluegill sunfish) 1-40 (estimated)

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