Drywall (FGD)
Common Product
MasterFormat 09 29 00 Gypsum Board

This information reflects our best understanding of product composition in 2019.

Drywall is ubiquitously used in building construction as interior wall enclosures, ceilings, and partitions in both load-bearing and non-load-bearing cases. There are many types of drywall including but not limited to acoustical, fire-resistant,...

More about Drywall (FGD)

Drywall is ubiquitously used in building construction as interior wall enclosures, ceilings, and partitions in both load-bearing and non-load-bearing cases. There are many types of drywall including but not limited to acoustical, fire-resistant, moisture-resistant, and mold-resistant varieties. Recently, lightweight drywall that is approximately 0.3 lbs/ft² lighter than standard drywall has also become common. This Common Product profile represents a standard drywall product. Drywall is composed of gypsum plaster pressed between a paper lining. The key material is gypsum (calcium sulfate), which is available in different hydration levels, and in anhydrous form. Natural gypsum stone is calcium sulfate-dihydrate (CaSO4*2H2O). The anhydrous calcium sulfate can be found in nature as anhydrite (CaSO4). Gypsum also occurs in large quantities as the industry by-product, otherwise known as flue-gas desulphurization (FGD) gypsum. There are not significant differences in the composition of finished drywall products made using these different source materials, but natural gypsum is preferred over FGD gypsum because the FGD drywall production process can release mercury into the environment. The amount of FGD and natural gypsum used in drywall varies regionally. Products tend to be composed primarily of one type or the other. Boards can also contain around 1% recycled scraps from the drywall manufacturing process and less commonly, scraps from drywall installation or demolition. This common product profile characterizes a drywall product made with FGD gypsum.

Historical versions of standard drywall CPs for products containing various levels of natural and FGD gypsum can be found here:
Historical Common Product: Drywall (Natural Gypsum) - 2015
Historical Common Product: Drywall (FGD) - 2015
Historical Common Product: Drywall (Mixed Gypsum) - 2015

Name % Wt Whole Function GS Score Sources
Flue Gas Desulfurization (FGD) gypsum
88.53% Structure Component NoGS
Cellulose, microcrystalline
9004-34-6
5.65% Cellulose Fiber LT-UNK
Water
7732-18-5
2.57% Moisture BM-4
Starch
9005-25-8
1.31% Binder LT-UNK
Starch
9005-25-8
0.31% Binder, Sizing Agent LT-UNK
Limestone
1317-65-3
0.29% Filler, Retention Agent LT-UNK
2-Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt
36290-04-7
0.25% Dispersant LT-P1
Ethylenevinylacetate copolymer
24937-78-8
0.24% Adhesive LT-UNK
Quartz
14808-60-7
0.24% Impurity LT-1
Kaolin, calcined
92704-41-1
0.21% Filler LT-UNK
Boric acid
10043-35-3
0.15% Strengthener LT-1
Glucose
50-99-7
0.08% Humectant BM-3
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-hydroxy-, C8-10-alkyl ethers, ammonium salts
68891-29-2
0.06% Foaming Agent LT-UNK
Sodium sulfate anhydrous
7757-82-6
0.03% Accelerator LT-UNK
Protein hydrolysate
9015-54-7
0.02% Retarder NoGS
Potassium
7440-09-7
0.02% Impurity LT-P1
Bentonite
1302-78-9
0.02% Filler, Retention Agent LT-UNK
Sodium
7440-23-5
0.02% Impurity LT-P1
Manganese
7439-96-5
<0.01% Impurity LT-P1
Zinc, elemental
7440-66-6
<0.01% Impurity LT-P1
Nickel
7440-02-0
<0.01% Impurity LT-1
Chromium
7440-47-3
<0.01% Impurity LT-P1
Vanadium, elemental
7440-62-2
<0.01% Impurity LT-1
T Lead
7439-92-1
<0.01% Impurity BM-1
Selenium, elemental
7782-49-2
<0.01% Impurity LT-P1
T Arsenic
7440-38-2
<0.01% Impurity LT-1
Cobalt
7440-48-4
<0.01% Impurity LT-1
Uranium
7440-61-1
<0.01% Impurity LT-1
Zirconium
7440-67-7
<0.01% Impurity LT-UNK
T MERCURY
7439-97-6
<0.01% Impurity LT-1
Thorium
7440-29-1
<0.01% Impurity LT-1
T CADMIUM
7440-43-9
<0.01% Impurity LT-1
Beryllium, elemental
7440-41-7
<0.01% Impurity LT-1
Antimony, elemental
7440-36-0
<0.01% Impurity LT-1
Name % Wt Part % Wt Whole Function GS Score Sources
FGD Drywall Core
93.27% 93.27% Structure Component BM-1  
Flue Gas Desulfurization (FGD) gypsum
94.92% 88.53% Structure Component NoGS
Water
7732-18-5
2.75% 2.57% Moisture BM-4
Starch
9005-25-8
1.40% 1.31% Binder LT-UNK
Residuals in Processed Drywall Gypsum (FGD)
0.30% 0.28% Impurity BM-1
Quartz
14808-60-7
84.64% 0.24% Impurity LT-1
Potassium
7440-09-7
7.77% 0.02% Impurity LT-P1
Sodium
7440-23-5
5.74% 0.02% Impurity LT-P1
Manganese
7439-96-5
1.10% <0.01% Impurity LT-P1
Zinc, elemental
7440-66-6
0.32% <0.01% Impurity LT-P1
Nickel
7440-02-0
0.11% <0.01% Impurity LT-1
Chromium
7440-47-3
0.07% <0.01% Impurity LT-P1
T Lead
7439-92-1
0.06% <0.01% Impurity BM-1
Vanadium, elemental
7440-62-2
0.06% <0.01% Impurity LT-1
Selenium, elemental
7782-49-2
0.04% <0.01% Impurity LT-P1
T Arsenic
7440-38-2
0.03% <0.01% Impurity LT-1
Cobalt
7440-48-4
0.02% <0.01% Impurity LT-1
T MERCURY
7439-97-6
0.01% <0.01% Impurity LT-1
Thorium
7440-29-1
0.01% <0.01% Impurity LT-1
Uranium
7440-61-1
0.01% <0.01% Impurity LT-1
Zirconium
7440-67-7
0.01% <0.01% Impurity LT-UNK
Antimony, elemental
7440-36-0
<0.01% <0.01% Impurity LT-1
Beryllium, elemental
7440-41-7
<0.01% <0.01% Impurity LT-1
T CADMIUM
7440-43-9
<0.01% <0.01% Impurity LT-1
2-Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt
36290-04-7
0.26% 0.25% Dispersant LT-P1
Boric acid
10043-35-3
0.16% 0.15% Strengthener LT-1
Glucose
50-99-7
0.09% 0.08% Humectant BM-3
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-hydroxy-, C8-10-alkyl ethers, ammonium salts
68891-29-2
0.06% 0.06% Foaming Agent LT-UNK
Protein hydrolysate
9015-54-7
0.03% 0.02% Retarder NoGS
Sodium sulfate anhydrous
7757-82-6
0.03% 0.03% Accelerator LT-UNK
Drywall Paper Facing
6.48% 6.48% Structure Component LT-UNK  
Cellulose, microcrystalline
9004-34-6
87.16% 5.65% Cellulose Fiber LT-UNK
Starch
9005-25-8
4.75% 0.31% Binder, Sizing Agent LT-UNK
Limestone
1317-65-3
4.52% 0.29% Filler, Retention Agent LT-UNK
Kaolin, calcined
92704-41-1
3.25% 0.21% Filler LT-UNK
Bentonite
1302-78-9
0.32% 0.02% Filler, Retention Agent LT-UNK
Ethylenevinylacetate copolymer
24937-78-8
0.24% 0.24% Adhesive LT-UNK

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Known or Potential Residuals
Known or Potential Residuals for Chemical
CASRN NAME GS SCORE TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCE
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Sources
Sources for Common Product Data
Source Uploaded Document Linked Document
Borax
CertainTeed HPD
ClassicRoc HPD
ClassicRoc SDS
Continental Leed
Continental SDS
ECHA Gypsum Retarder
EPA2009
EPRI2010
Fly Ash Catalysts
FPInnovations US10011528B2
GA EPD - Glass Mat
Gold Bond SDS
Gypsum Additives
Gypsum Wallboard Closed-loop Recycling
Hercules US8404365B2
History of Paper
MSHA
NG Type X HPD
PABCO Gypsum SDS
Panel Rey HPD
Panel Rey SDS
Papcel
PubChem Na2SO4
Quickrete SDS
Retardan 200 L
Sheetrock SDS
Specialty
ToughRock SDS
ToughRock SDS
Type X EPD
USG
USG US10421250
USG US20170246838A1
USG US20180340297A1
USG US3573947A
USG US4372814A
Vermiculite - Gypsum
Yost